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sysctl命令用于运行时配置内核参数，这些参数位于/proc/sys目录下。sysctl配置与显示在/proc/sys目录中的内核参数．可以用sysctl来设置或重新设置联网功能，如IP转发、IP碎片去除以及源路由检查等。用户只需要编辑/etc/sysctl.conf文件，即可手工或自动执行由sysctl控制的功能。
命令格式：
sysctl [-n] [-e] -w variable=value
sysctl [-n] [-e] -p <filename> (default /etc/sysctl.conf)
sysctl [-n] [-e] -a
常用参数的意义：
-w 临时改变某个指定参数的值，如
sysctl -w net.ipv4.ip_forward=1
-a 显示所有的系统参数
-p 从指定的文件加载系统参数，如不指定即从/etc/sysctl.conf中加载
如果仅仅是想临时改变某个系统参数的值，可以用两种方法来实现,例如想启用IP路由转发功能：
1) #echo 1 > /proc/sys/net/ipv4/ip_forward
2) #sysctl -w net.ipv4.ip_forward=1
以上两种方法都可能立即开启路由功能，但如果系统重启，或执行了
# service network restart
命令，所设置的值即会丢失，如果想永久保留配置，可以修改/etc/sysctl.conf文件
将 net.ipv4.ip_forward=0改为net.ipv4.ip_forward=1
1, sysctl命令的作用
在运行时配置内核参数
2,用法举例:
-w 用此选项来改变一个sysctl设置
例:sysctl -w net.ipv4.ip_forward=1
-p 载入sysctl配置文件
如-p后未指定路径，则载入 /etc/sysctl.conf
例: sysctl -p /etc/sysctl.conf
001 | 了解这些内核参数的意义对于解决问题会很有帮助。 |
003 | kernel.sched_child_runs_first = 0 |
004 | kernel.sched_min_granularity_ns = 750000 |
005 | kernel.sched_latency_ns = 6000000 |
006 | kernel.sched_wakeup_granularity_ns = 1000000 |
007 | kernel.sched_tunable_scaling = 1 |
008 | kernel.sched_migration_cost = 500000 |
009 | kernel.sched_nr_migrate = 32 |
010 | kernel.sched_time_avg = 1000 |
011 | kernel.sched_shares_window = 10000000 |
012 | kernel.timer_migration = 1 |
013 | kernel.sched_rt_period_us = 1000000 |
014 | kernel.sched_rt_runtime_us = 950000 |
016 | kernel.core_uses_pid = 0 |
017 | kernel.core_pattern = core |
018 | kernel.core_pipe_limit = 0 |
020 | kernel.print-fatal-signals = 0 |
021 | kernel.ctrl-alt-del = 0 |
022 | kernel.modprobe = /sbin/modprobe |
023 | kernel.modules_disabled = 0 |
024 | kernel.hotplug = /sbin/hotplug |
025 | kernel.sg-big-buff = 32768 |
027 | kernel.threads-max = 4606 |
028 | kernel.random.poolsize = 4096 |
029 | kernel.random.entropy_avail = 152 |
030 | kernel.random.read_wakeup_threshold = 64 |
031 | kernel.random.write_wakeup_threshold = 128 |
032 | kernel.random.boot_id = 9e7b0657-6f91-4e94-9c05-55c49dd99da9 |
033 | kernel.random.uuid = 309f03a1-28d0-47e0-9616-a390bb0349ba |
034 | kernel.usermodehelper.bset = 4294967295 4294967295 |
035 | kernel.usermodehelper.inheritable = 4294967295 4294967295 |
036 | kernel.overflowuid = 65534 |
037 | kernel.overflowgid = 65534 |
038 | kernel.pid_max = 32768 |
039 | kernel.panic_on_oops = 0 |
040 | kernel.printk = 7 4 1 7 |
041 | kernel.printk_ratelimit = 5 |
042 | kernel.printk_ratelimit_burst = 10 |
043 | kernel.printk_delay = 0 |
044 | kernel.dmesg_restrict = 0 |
045 | kernel.kptr_restrict = 0 |
046 | kernel.ngroups_max = 65536 |
047 | kernel.randomize_va_space = 1 |
048 | kernel.max_lock_depth = 1024 |
049 | kernel.poweroff_cmd = /sbin/poweroff |
052 | kernel.osrelease = 3.0.13 |
055 | kernel.domainname = (none) |
056 | kernel.shmmax = 33554432 |
057 | kernel.shmall = 2097152 |
062 | kernel.sem = 250 32000 32 128 |
063 | kernel.auto_msgmni = 1 |
066 | vm.overcommit_memory = 0 |
068 | vm.oom_kill_allocating_task = 0 |
070 | vm.overcommit_ratio = 50 |
072 | vm.dirty_background_ratio = 10 |
073 | vm.dirty_background_bytes = 0 |
076 | vm.dirty_writeback_centisecs = 500 |
077 | vm.dirty_expire_centisecs = 3000 |
078 | vm.nr_pdflush_threads = 0 |
080 | vm.lowmem_reserve_ratio = 256 32 32 |
082 | vm.min_free_kbytes = 2188 |
083 | vm.min_free_order_shift = 1 |
084 | vm.percpu_pagelist_fraction = 0 |
085 | vm.max_map_count = 65530 |
088 | vm.vfs_cache_pressure = 100 |
089 | vm.mmap_min_addr = 4096 |
090 | vm.highmem_is_dirtyable = 0 |
091 | vm.scan_unevictable_pages = 0 |
093 | fs.inode-state = 2145 0 0 0 0 0 0 |
094 | fs.file-nr = 297 0 29469 |
097 | fs.dentry-state = 2777 2184 45 0 0 0 |
098 | fs.overflowuid = 65534 |
099 | fs.overflowgid = 65534 |
101 | fs.dir-notify-enable= 1 |
102 | fs.lease-break-time= 45 |
105 | fs.inotify.max_user_instances = 128 |
106 | fs.inotify.max_user_watches = 8192 |
107 | fs.inotify.max_queued_events = 16384 |
108 | fs.epoll.max_user_watches = 111805 |
110 | fs.pipe-max-size = 1048576 |
111 | fs.mqueue.queues_max = 256 |
112 | fs.mqueue.msg_max = 10 |
113 | fs.mqueue.msgsize_max = 8192 |
114 | dev.scsi.logging_level = 0 |
115 | net.core.somaxconn = 128 |
116 | net.core.xfrm_aevent_etime = 10 |
117 | net.core.xfrm_aevent_rseqth = 2 |
118 | net.core.xfrm_larval_drop = 1 |
119 | net.core.xfrm_acq_expires = 30 |
120 | net.core.wmem_max = 108544 |
121 | net.core.rmem_max = 108544 |
122 | net.core.wmem_default = 108544 |
123 | net.core.rmem_default = 108544 |
124 | net.core.dev_weight = 64 |
125 | net.core.netdev_max_backlog = 1000 |
126 | net.core.netdev_tstamp_prequeue = 1 |
127 | net.core.message_cost = 5 |
128 | net.core.message_burst = 10 |
129 | net.core.optmem_max = 10240 |
130 | net.core.netdev_budget = 300 |
132 | net.ipv4.route.gc_thresh = 4096 |
133 | net.ipv4.route.max_size = 65536 |
134 | net.ipv4.route.gc_min_interval = 0 |
135 | net.ipv4.route.gc_min_interval_ms = 500 |
136 | net.ipv4.route.gc_timeout = 300 |
137 | net.ipv4.route.gc_interval = 60 |
138 | net.ipv4.route.redirect_load = 4 |
139 | net.ipv4.route.redirect_number = 9 |
140 | net.ipv4.route.redirect_silence = 4096 |
141 | net.ipv4.route.error_cost = 200 |
142 | net.ipv4.route.error_burst = 1000 |
143 | net.ipv4.route.gc_elasticity = 8 |
144 | net.ipv4.route.mtu_expires = 600 |
145 | net.ipv4.route.min_pmtu = 552 |
146 | net.ipv4.route.min_adv_mss = 256 |
147 | net.ipv4.neigh.default.mcast_solicit = 3 |
148 | net.ipv4.neigh.default.ucast_solicit = 3 |
149 | net.ipv4.neigh.default.app_solicit = 0 |
150 | net.ipv4.neigh.default.retrans_time = 100 |
151 | net.ipv4.neigh.default.base_reachable_time = 30 |
152 | net.ipv4.neigh.default.delay_first_probe_time = 5 |
153 | net.ipv4.neigh.default.gc_stale_time = 60 |
154 | net.ipv4.neigh.default.unres_qlen = 3 |
155 | net.ipv4.neigh.default.proxy_qlen = 64 |
156 | net.ipv4.neigh.default.anycast_delay = 100 |
157 | net.ipv4.neigh.default.proxy_delay = 80 |
158 | net.ipv4.neigh.default.locktime = 100 |
159 | net.ipv4.neigh.default.retrans_time_ms = 1000 |
160 | net.ipv4.neigh.default.base_reachable_time_ms = 30000 |
161 | net.ipv4.neigh.default.gc_interval = 30 |
162 | net.ipv4.neigh.default.gc_thresh1 = 128 |
163 | net.ipv4.neigh.default.gc_thresh2 = 512 |
164 | net.ipv4.neigh.default.gc_thresh3 = 1024 |
165 | net.ipv4.neigh.lo.mcast_solicit = 3 |
166 | net.ipv4.neigh.lo.ucast_solicit = 3 |
167 | net.ipv4.neigh.lo.app_solicit = 0 |
168 | net.ipv4.neigh.lo.retrans_time = 100 |
169 | net.ipv4.neigh.lo.base_reachable_time = 30 |
170 | net.ipv4.neigh.lo.delay_first_probe_time = 5 |
171 | net.ipv4.neigh.lo.gc_stale_time = 60 |
172 | net.ipv4.neigh.lo.unres_qlen = 3 |
173 | net.ipv4.neigh.lo.proxy_qlen = 64 |
174 | net.ipv4.neigh.lo.anycast_delay = 100 |
175 | net.ipv4.neigh.lo.proxy_delay = 80 |
176 | net.ipv4.neigh.lo.locktime = 100 |
177 | net.ipv4.neigh.lo.retrans_time_ms = 1000 |
178 | net.ipv4.neigh.lo.base_reachable_time_ms = 30000 |
179 | net.ipv4.neigh.eth0.mcast_solicit = 3 |
180 | net.ipv4.neigh.eth0.ucast_solicit = 3 |
181 | net.ipv4.neigh.eth0.app_solicit = 0 |
182 | net.ipv4.neigh.eth0.retrans_time = 100 |
183 | net.ipv4.neigh.eth0.base_reachable_time = 30 |
184 | net.ipv4.neigh.eth0.delay_first_probe_time = 5 |
185 | net.ipv4.neigh.eth0.gc_stale_time = 60 |
186 | net.ipv4.neigh.eth0.unres_qlen = 3 |
187 | net.ipv4.neigh.eth0.proxy_qlen = 64 |
188 | net.ipv4.neigh.eth0.anycast_delay = 100 |
189 | net.ipv4.neigh.eth0.proxy_delay = 80 |
190 | net.ipv4.neigh.eth0.locktime = 100 |
191 | net.ipv4.neigh.eth0.retrans_time_ms = 1000 |
192 | net.ipv4.neigh.eth0.base_reachable_time_ms = 30000 |
193 | net.ipv4.neigh.sit0.mcast_solicit = 3 |
194 | net.ipv4.neigh.sit0.ucast_solicit = 3 |
195 | net.ipv4.neigh.sit0.app_solicit = 0 |
196 | net.ipv4.neigh.sit0.retrans_time = 100 |
197 | net.ipv4.neigh.sit0.base_reachable_time = 30 |
198 | net.ipv4.neigh.sit0.delay_first_probe_time = 5 |
199 | net.ipv4.neigh.sit0.gc_stale_time = 60 |
200 | net.ipv4.neigh.sit0.unres_qlen = 3 |
201 | net.ipv4.neigh.sit0.proxy_qlen = 64 |
202 | net.ipv4.neigh.sit0.anycast_delay = 100 |
203 | net.ipv4.neigh.sit0.proxy_delay = 80 |
204 | net.ipv4.neigh.sit0.locktime = 100 |
205 | net.ipv4.neigh.sit0.retrans_time_ms = 1000 |
206 | net.ipv4.neigh.sit0.base_reachable_time_ms = 30000 |
207 | net.ipv4.tcp_timestamps = 1 |
208 | net.ipv4.tcp_window_scaling = 6 |
210 | net.ipv4.tcp_retrans_collapse = 1 |
211 | net.ipv4.ip_default_ttl = 64 |
212 | net.ipv4.ip_no_pmtu_disc = 0 |
213 | net.ipv4.ip_nonlocal_bind = 0 |
214 | net.ipv4.tcp_syn_retries = 5 |
215 | net.ipv4.tcp_synack_retries = 5 |
216 | net.ipv4.tcp_max_orphans = 8192 |
217 | net.ipv4.tcp_max_tw_buckets = 8192 |
218 | net.ipv4.ip_dynaddr = 0 |
219 | net.ipv4.tcp_keepalive_time = 7200 |
220 | net.ipv4.tcp_keepalive_probes = 9 |
221 | net.ipv4.tcp_keepalive_intvl = 75 |
222 | net.ipv4.tcp_retries1 = 3 |
223 | net.ipv4.tcp_retries2 = 15 |
224 | net.ipv4.tcp_fin_timeout = 60 |
225 | net.ipv4.tcp_tw_recycle = 0 |
226 | net.ipv4.tcp_abort_on_overflow = 0 |
227 | net.ipv4.tcp_stdurg = 0 |
228 | net.ipv4.tcp_rfc1337 = 0 |
229 | net.ipv4.tcp_max_syn_backlog = 128 |
230 | net.ipv4.ip_local_port_range = 32768 61000 |
231 | net.ipv4.ip_local_reserved_ports = |
232 | net.ipv4.igmp_max_memberships = 20 |
233 | net.ipv4.igmp_max_msf = 10 |
234 | net.ipv4.inet_peer_threshold = 65664 |
235 | net.ipv4.inet_peer_minttl = 120 |
236 | net.ipv4.inet_peer_maxttl = 600 |
237 | net.ipv4.inet_peer_gc_mintime = 10 |
238 | net.ipv4.inet_peer_gc_maxtime = 120 |
239 | net.ipv4.tcp_orphan_retries = 0 |
241 | net.ipv4.tcp_reordering = 3 |
243 | net.ipv4.tcp_dsack = 1 |
244 | net.ipv4.tcp_mem = 7014 9354 14028 |
245 | net.ipv4.tcp_wmem = 4096 16384 299328 |
246 | net.ipv4.tcp_rmem = 4096 87380 299328 |
247 | net.ipv4.tcp_app_win = 31 |
248 | net.ipv4.tcp_adv_win_scale = 2 |
249 | net.ipv4.tcp_tw_reuse = 0 |
251 | net.ipv4.tcp_frto_response = 0 |
252 | net.ipv4.tcp_low_latency = 0 |
253 | net.ipv4.tcp_no_metrics_save = 0 |
254 | net.ipv4.tcp_moderate_rcvbuf = 1 |
255 | net.ipv4.tcp_tso_win_divisor = 3 |
256 | net.ipv4.tcp_congestion_control = cubic |
258 | net.ipv4.tcp_mtu_probing = 0 |
259 | net.ipv4.tcp_base_mss = 512 |
260 | net.ipv4.tcp_workaround_signed_windows = 0 |
261 | net.ipv4.tcp_slow_start_after_idle = 1 |
262 | net.ipv4.tcp_available_congestion_control = cubic reno |
263 | net.ipv4.tcp_allowed_congestion_control = cubic reno |
264 | net.ipv4.tcp_max_ssthresh = 0 |
265 | net.ipv4.tcp_cookie_size = 0 |
266 | net.ipv4.tcp_thin_linear_timeouts = 0 |
267 | net.ipv4.tcp_thin_dupack = 0 |
268 | net.ipv4.udp_mem = 7014 9354 14028 |
269 | net.ipv4.udp_rmem_min = 4096 |
270 | net.ipv4.udp_wmem_min = 4096 |
271 | net.ipv4.conf.all.forwarding = 0 |
272 | net.ipv4.conf.all.mc_forwarding = 0 |
273 | net.ipv4.conf.all.accept_redirects = 1 |
274 | net.ipv4.conf.all.secure_redirects = 1 |
275 | net.ipv4.conf.all.shared_media = 1 |
276 | net.ipv4.conf.all.rp_filter = 0 |
277 | net.ipv4.conf.all.send_redirects = 1 |
278 | net.ipv4.conf.all.accept_source_route = 0 |
279 | net.ipv4.conf.all.accept_local = 0 |
280 | net.ipv4.conf.all.src_valid_mark = 0 |
281 | net.ipv4.conf.all.proxy_arp = 0 |
282 | net.ipv4.conf.all.medium_id = 0 |
283 | net.ipv4.conf.all.bootp_relay = 0 |
284 | net.ipv4.conf.all.log_martians = 0 |
285 | net.ipv4.conf.all.tag = 0 |
286 | net.ipv4.conf.all.arp_filter = 0 |
287 | net.ipv4.conf.all.arp_announce = 0 |
288 | net.ipv4.conf.all.arp_ignore = 0 |
289 | net.ipv4.conf.all.arp_accept = 0 |
290 | net.ipv4.conf.all.arp_notify = 0 |
291 | net.ipv4.conf.all.proxy_arp_pvlan = 0 |
292 | net.ipv4.conf.all.disable_xfrm = 0 |
293 | net.ipv4.conf.all.disable_policy = 0 |
294 | net.ipv4.conf.all.force_igmp_version = 0 |
295 | net.ipv4.conf.all.promote_secondaries = 0 |
296 | net.ipv4.conf.default.forwarding = 0 |
297 | net.ipv4.conf.default.mc_forwarding = 0 |
298 | net.ipv4.conf.default.accept_redirects = 1 |
299 | net.ipv4.conf.default.secure_redirects = 1 |
300 | net.ipv4.conf.default.shared_media = 1 |
301 | net.ipv4.conf.default.rp_filter = 0 |
302 | net.ipv4.conf.default.send_redirects = 1 |
303 | net.ipv4.conf.default.accept_source_route = 1 |
304 | net.ipv4.conf.default.accept_local = 0 |
305 | net.ipv4.conf.default.src_valid_mark = 0 |
306 | net.ipv4.conf.default.proxy_arp = 0 |
307 | net.ipv4.conf.default.medium_id = 0 |
308 | net.ipv4.conf.default.bootp_relay = 0 |
309 | net.ipv4.conf.default.log_martians = 0 |
310 | net.ipv4.conf.default.tag = 0 |
311 | net.ipv4.conf.default.arp_filter = 0 |
312 | net.ipv4.conf.default.arp_announce = 0 |
313 | net.ipv4.conf.default.arp_ignore = 0 |
314 | net.ipv4.conf.default.arp_accept = 0 |
315 | net.ipv4.conf.default.arp_notify = 0 |
316 | net.ipv4.conf.default.proxy_arp_pvlan = 0 |
317 | net.ipv4.conf.default.disable_xfrm = 0 |
318 | net.ipv4.conf.default.disable_policy = 0 |
319 | net.ipv4.conf.default.force_igmp_version = 0 |
320 | net.ipv4.conf.default.promote_secondaries = 0 |
321 | net.ipv4.conf.lo.forwarding = 0 |
322 | net.ipv4.conf.lo.mc_forwarding = 0 |
323 | net.ipv4.conf.lo.accept_redirects = 1 |
324 | net.ipv4.conf.lo.secure_redirects = 1 |
325 | net.ipv4.conf.lo.shared_media = 1 |
326 | net.ipv4.conf.lo.rp_filter = 0 |
327 | net.ipv4.conf.lo.send_redirects = 1 |
328 | net.ipv4.conf.lo.accept_source_route = 1 |
329 | net.ipv4.conf.lo.accept_local = 0 |
330 | net.ipv4.conf.lo.src_valid_mark = 0 |
331 | net.ipv4.conf.lo.proxy_arp = 0 |
332 | net.ipv4.conf.lo.medium_id = 0 |
333 | net.ipv4.conf.lo.bootp_relay = 0 |
334 | net.ipv4.conf.lo.log_martians = 0 |
335 | net.ipv4.conf.lo.tag = 0 |
336 | net.ipv4.conf.lo.arp_filter = 0 |
337 | net.ipv4.conf.lo.arp_announce = 0 |
338 | net.ipv4.conf.lo.arp_ignore = 0 |
339 | net.ipv4.conf.lo.arp_accept = 0 |
340 | net.ipv4.conf.lo.arp_notify = 0 |
341 | net.ipv4.conf.lo.proxy_arp_pvlan = 0 |
342 | net.ipv4.conf.lo.disable_xfrm = 1 |
343 | net.ipv4.conf.lo.disable_policy = 1 |
344 | net.ipv4.conf.lo.force_igmp_version = 0 |
345 | net.ipv4.conf.lo.promote_secondaries = 0 |
346 | net.ipv4.conf.eth0.forwarding = 0 |
347 | net.ipv4.conf.eth0.mc_forwarding = 0 |
348 | net.ipv4.conf.eth0.accept_redirects = 1 |
349 | net.ipv4.conf.eth0.secure_redirects = 1 |
350 | net.ipv4.conf.eth0.shared_media = 1 |
351 | net.ipv4.conf.eth0.rp_filter = 0[ 2414.137398] process `sysctl' is using deprecated sysctl (syscall) net.ipv6.neigh.default.retrans_time; Use net.ipv6.neigh.default.retrans_time_ms instead. |
353 | net.ipv4.conf.eth0.send_redirects = 1 |
354 | net.ipv4.conf.eth0.accept_source_route = 1 |
355 | net.ipv4.conf.eth0.accept_local = 0 |
356 | net.ipv4.conf.eth0.src_valid_mark = 0 |
357 | net.ipv4.conf.eth0.proxy_arp = 0 |
358 | net.ipv4.conf.eth0.medium_id = 0 |
359 | net.ipv4.conf.eth0.bootp_relay = 0 |
360 | net.ipv4.conf.eth0.log_martians = 0 |
361 | net.ipv4.conf.eth0.tag = 0 |
362 | net.ipv4.conf.eth0.arp_filter = 0 |
363 | net.ipv4.conf.eth0.arp_announce = 0 |
364 | net.ipv4.conf.eth0.arp_ignore = 0 |
365 | net.ipv4.conf.eth0.arp_accept = 0 |
366 | net.ipv4.conf.eth0.arp_notify = 0 |
367 | net.ipv4.conf.eth0.proxy_arp_pvlan = 0 |
368 | net.ipv4.conf.eth0.disable_xfrm = 0 |
369 | net.ipv4.conf.eth0.disable_policy = 0 |
370 | net.ipv4.conf.eth0.force_igmp_version = 0 |
371 | net.ipv4.conf.eth0.promote_secondaries = 0 |
372 | net.ipv4.conf.sit0.forwarding = 0 |
373 | net.ipv4.conf.sit0.mc_forwarding = 0 |
374 | net.ipv4.conf.sit0.accept_redirects = 1 |
375 | net.ipv4.conf.sit0.secure_redirects = 1 |
376 | net.ipv4.conf.sit0.shared_media = 1 |
377 | net.ipv4.conf.sit0.rp_filter = 0 |
378 | net.ipv4.conf.sit0.send_redirects = 1 |
379 | net.ipv4.conf.sit0.accept_source_route = 1 |
380 | net.ipv4.conf.sit0.accept_local = 0 |
381 | net.ipv4.conf.sit0.src_valid_mark = 0 |
382 | net.ipv4.conf.sit0.proxy_arp = 0 |
383 | net.ipv4.conf.sit0.medium_id = 0 |
384 | net.ipv4.conf.sit0.bootp_relay = 0 |
385 | net.ipv4.conf.sit0.log_martians = 0 |
386 | net.ipv4.conf.sit0.tag = 0 |
387 | net.ipv4.conf.sit0.arp_filter = 0 |
388 | net.ipv4.conf.sit0.arp_announce = 0 |
389 | net.ipv4.conf.sit0.arp_ignore = 0 |
390 | net.ipv4.conf.sit0.arp_accept = 0 |
391 | net.ipv4.conf.sit0.arp_notify = 0 |
392 | net.ipv4.conf.sit0.proxy_arp_pvlan = 0 |
393 | net.ipv4.conf.sit0.disable_xfrm = 0 |
394 | net.ipv4.conf.sit0.disable_policy = 0 |
395 | net.ipv4.conf.sit0.force_igmp_version = 0 |
396 | net.ipv4.conf.sit0.promote_secondaries = 0 |
397 | net.ipv4.ip_forward = 0 |
398 | net.ipv4.xfrm4_gc_thresh = 32768 |
399 | net.ipv4.ipfrag_high_thresh = 262144 |
400 | net.ipv4.ipfrag_low_thresh = 196608 |
401 | net.ipv4.ipfrag_time = 30 |
402 | net.ipv4.icmp_echo_ignore_all = 0 |
403 | net.ipv4.icmp_echo_ignore_broadcasts = 1 |
404 | net.ipv4.icmp_ignore_bogus_error_responses = 1 |
405 | net.ipv4.icmp_errors_use_inbound_ifaddr = 0 |
406 | net.ipv4.icmp_ratelimit = 1000 |
407 | net.ipv4.icmp_ratemask = 6168 |
408 | net.ipv4.rt_cache_rebuild_count = 4 |
409 | net.ipv4.ping_group_range = 1 0 |
410 | net.ipv4.ipfrag_secret_interval = 600 |
411 | net.ipv4.ipfrag_max_dist = 64 |
412 | net.ipv6.neigh.default.mcast_solicit = 3 |
413 | net.ipv6.neigh.default.ucast_solicit = 3 |
414 | net.ipv6.neigh.default.app_solicit = 0 |
415 | net.ipv6.neigh.default.retrans_time = 200 |
416 | net.ipv6.neigh.default.base_reachable_time = 30 |
417 | net.ipv6.neigh.default.delay_first_probe_time = 5 |
418 | net.ipv6.neigh.default.gc_stale_time = 60 |
419 | net.ipv6.neigh.default.unres_qlen = 3 |
420 | net.ipv6.neigh.default.proxy_qlen = 64 |
421 | net.ipv6.neigh.default.anycast_delay = 100 |
422 | net.ipv6.neigh.default.proxy_delay = 80 |
423 | net.ipv6.neigh.default.locktime = 0 |
424 | net.ipv6.neigh.default.retrans_time_ms = 1000 |
425 | net.ipv6.neigh.default.base_reachable_time_ms = 30000 |
426 | net.ipv6.neigh.default.gc_interval = 30 |
427 | net.ipv6.neigh.default.gc_thresh1 = 128 |
428 | net.ipv6.neigh.default.gc_thresh2 = 512 |
429 | net.ipv6.neigh.default.gc_thresh3 = 1024 |
430 | net.ipv6.neigh.lo.mcast_solicit = 3 |
431 | net.ipv6.neigh.lo.ucast_solicit = 3 |
432 | net.ipv6.neigh.lo.app_solicit = 0 |
433 | net.ipv6.neigh.lo.retrans_time = 200 |
434 | net.ipv6.neigh.lo.base_reachable_time = 30 |
435 | net.ipv6.neigh.lo.delay_first_probe_time = 5 |
436 | net.ipv6.neigh.lo.gc_stale_time = 60 |
437 | net.ipv6.neigh.lo.unres_qlen = 3 |
438 | net.ipv6.neigh.lo.proxy_qlen = 64 |
439 | net.ipv6.neigh.lo.anycast_delay = 100 |
440 | net.ipv6.neigh.lo.proxy_delay = 80 |
441 | net.ipv6.neigh.lo.locktime = 0 |
442 | net.ipv6.neigh.lo.retrans_time_ms = 1000 |
443 | net.ipv6.neigh.lo.base_reachable_time_ms = 30000 |
444 | net.ipv6.neigh.eth0.mcast_solicit = 3 |
445 | net.ipv6.neigh.eth0.ucast_solicit = 3 |
446 | net.ipv6.neigh.eth0.app_solicit = 0 |
447 | net.ipv6.neigh.eth0.retrans_time = 200 |
448 | net.ipv6.neigh.eth0.base_reachable_time = 30 |
449 | net.ipv6.neigh.eth0.delay_first_probe_time = 5 |
450 | net.ipv6.neigh.eth0.gc_stale_time = 60 |
451 | net.ipv6.neigh.eth0.unres_qlen = 3 |
452 | net.ipv6.neigh.eth0.proxy_qlen = 64 |
453 | net.ipv6.neigh.eth0.anycast_delay = 100 |
454 | net.ipv6.neigh.eth0.proxy_delay = 80 |
455 | net.ipv6.neigh.eth0.locktime = 0 |
456 | net.ipv6.neigh.eth0.retrans_time_ms = 1000 |
457 | net.ipv6.neigh.eth0.base_reachable_time_ms = 30000 |
458 | net.ipv6.neigh.sit0.mcast_solicit = 3 |
459 | net.ipv6.neigh.sit0.ucast_solicit = 3 |
460 | net.ipv6.neigh.sit0.app_solicit = 0 |
461 | net.ipv6.neigh.sit0.retrans_time = 200 |
462 | net.ipv6.neigh.sit0.base_reachable_time = 30 |
463 | net.ipv6.neigh.sit0.delay_first_probe_time = 5 |
464 | net.ipv6.neigh.sit0.gc_stale_time = 60 |
465 | net.ipv6.neigh.sit0.unres_qlen = 3 |
466 | net.ipv6.neigh.sit0.proxy_qlen = 64 |
467 | net.ipv6.neigh.sit0.anycast_delay = 100 |
468 | net.ipv6.neigh.sit0.proxy_delay = 80 |
469 | net.ipv6.neigh.sit0.locktime = 0 |
470 | net.ipv6.neigh.sit0.retrans_time_ms = 1000 |
471 | net.ipv6.neigh.sit0.base_reachable_time_ms = 30000 |
472 | net.ipv6.xfrm6_gc_thresh = 1024 |
473 | net.ipv6.conf.all.forwarding = 0 |
474 | net.ipv6.conf.all.hop_limit = 64 |
475 | net.ipv6.conf.all.mtu = 1280 |
476 | net.ipv6.conf.all.accept_ra = 1 |
477 | net.ipv6.conf.all.accept_redirects = 1 |
478 | net.ipv6.conf.all.autoconf = 1 |
479 | net.ipv6.conf.all.dad_transmits = 1 |
480 | net.ipv6.conf.all.router_solicitations = 3 |
481 | net.ipv6.conf.all.router_solicitation_interval = 4 |
482 | net.ipv6.conf.all.router_solicitation_delay = 1 |
483 | net.ipv6.conf.all.force_mld_version = 0 |
484 | net.ipv6.conf.all.max_addresses = 16 |
485 | net.ipv6.conf.all.accept_ra_defrtr = 1 |
486 | net.ipv6.conf.all.accept_ra_pinfo = 1 |
487 | net.ipv6.conf.all.proxy_ndp = 0 |
488 | net.ipv6.conf.all.accept_source_route = 0 |
489 | net.ipv6.conf.all.disable_ipv6 = 1 |
490 | net.ipv6.conf.all.accept_dad = 1 |
491 | net.ipv6.conf.all.force_tllao = 0 |
492 | net.ipv6.conf.default.forwarding = 0 |
493 | net.ipv6.conf.default.hop_limit = 64 |
494 | net.ipv6.conf.default.mtu = 1280 |
495 | net.ipv6.conf.default.accept_ra = 1 |
496 | net.ipv6.conf.default.accept_redirects = 1 |
497 | net.ipv6.conf.default.autoconf = 1 |
498 | net.ipv6.conf.default.dad_transmits = 1 |
499 | net.ipv6.conf.default.router_solicitations = 3 |
500 | net.ipv6.conf.default.router_solicitation_interval = 4 |
501 | net.ipv6.conf.default.router_solicitation_delay = 1 |
502 | net.ipv6.conf.default.force_mld_version = 0 |
503 | net.ipv6.conf.default.max_addresses = 16 |
504 | net.ipv6.conf.default.accept_ra_defrtr = 1 |
505 | net.ipv6.conf.default.accept_ra_pinfo = 1 |
506 | net.ipv6.conf.default.proxy_ndp = 0 |
507 | net.ipv6.conf.default.accept_source_route = 0 |
508 | net.ipv6.conf.default.disable_ipv6 = 1 |
509 | net.ipv6.conf.default.accept_dad = 1 |
510 | net.ipv6.conf.default.force_tllao = 0 |
511 | net.ipv6.conf.lo.forwarding = 0 |
512 | net.ipv6.conf.lo.hop_limit = 64 |
513 | net.ipv6.conf.lo.mtu = 16436 |
514 | net.ipv6.conf.lo.accept_ra = 1 |
515 | net.ipv6.conf.lo.accept_redirects = 1 |
516 | net.ipv6.conf.lo.autoconf = 1 |
517 | net.ipv6.conf.lo.dad_transmits = 1 |
518 | net.ipv6.conf.lo.router_solicitations = 3 |
519 | net.ipv6.conf.lo.router_solicitation_interval = 4 |
520 | net.ipv6.conf.lo.router_solicitation_delay = 1 |
521 | net.ipv6.conf.lo.force_mld_version = 0 |
522 | net.ipv6.conf.lo.max_addresses = 16 |
523 | net.ipv6.conf.lo.accept_ra_defrtr = 1 |
524 | net.ipv6.conf.lo.accept_ra_pinfo = 1 |
525 | net.ipv6.conf.lo.proxy_ndp = 0 |
526 | net.ipv6.conf.lo.accept_source_route = 0 |
527 | net.ipv6.conf.lo.disable_ipv6 = 1 |
528 | net.ipv6.conf.lo.accept_dad = -1 |
529 | net.ipv6.conf.lo.force_tllao = 0 |
530 | net.ipv6.conf.eth0.forwarding = 0 |
531 | net.ipv6.conf.eth0.hop_limit = 64 |
532 | net.ipv6.conf.eth0.mtu = 1500 |
533 | net.ipv6.conf.eth0.accept_ra = 1 |
534 | net.ipv6.conf.eth0.accept_redirects = 1 |
535 | net.ipv6.conf.eth0.autoconf = 1 |
536 | net.ipv6.conf.eth0.dad_transmits = 1 |
537 | net.ipv6.conf.eth0.router_solicitations = 3 |
538 | net.ipv6.conf.eth0.router_solicitation_interval = 4 |
539 | net.ipv6.conf.eth0.router_solicitation_delay = 1 |
540 | net.ipv6.conf.eth0.force_mld_version = 0 |
541 | net.ipv6.conf.eth0.max_addresses = 16 |
542 | net.ipv6.conf.eth0.accept_ra_defrtr = 1 |
543 | net.ipv6.conf.eth0.accept_ra_pinfo = 1 |
544 | net.ipv6.conf.eth0.proxy_ndp = 0 |
545 | net.ipv6.conf.eth0.accept_source_route = 0 |
546 | net.ipv6.conf.eth0.disable_ipv6 = 1 |
547 | net.ipv6.conf.eth0.accept_dad = 1 |
548 | net.ipv6.conf.eth0.force_tllao = 0 |
549 | net.ipv6.conf.sit0.forwarding = 0 |
550 | net.ipv6.conf.sit0.hop_limit = 64 |
551 | net.ipv6.conf.sit0.mtu = 1480 |
552 | net.ipv6.conf.sit0.accept_ra = 1 |
553 | net.ipv6.conf.sit0.accept_redirects = 1 |
554 | net.ipv6.conf.sit0.autoconf = 1 |
555 | net.ipv6.conf.sit0.dad_transmits = 1 |
556 | net.ipv6.conf.sit0.router_solicitations = 3 |
557 | net.ipv6.conf.sit0.router_solicitation_interval = 4 |
558 | net.ipv6.conf.sit0.router_solicitation_delay = 1 |
559 | net.ipv6.conf.sit0.force_mld_version = 0 |
560 | net.ipv6.conf.sit0.max_addresses = 16 |
561 | net.ipv6.conf.sit0.accept_ra_defrtr = 1 |
562 | net.ipv6.conf.sit0.accept_ra_pinfo = 1 |
563 | net.ipv6.conf.sit0.proxy_ndp = 0 |
564 | net.ipv6.conf.sit0.accept_source_route = 0 |
565 | net.ipv6.conf.sit0.disable_ipv6 = 1 |
566 | net.ipv6.conf.sit0.accept_dad = -1 |
567 | net.ipv6.conf.sit0.force_tllao = 0 |
568 | net.ipv6.ip6frag_high_thresh = 262144 |
569 | net.ipv6.ip6frag_low_thresh = 196608 |
570 | net.ipv6.ip6frag_time = 60 |
571 | net.ipv6.route.gc_thresh = 1024 |
572 | net.ipv6.route.max_size = 4096 |
573 | net.ipv6.route.gc_min_interval = 0 |
574 | net.ipv6.route.gc_timeout = 60 |
575 | net.ipv6.route.gc_interval = 30 |
576 | net.ipv6.route.gc_elasticity = 9 |
577 | net.ipv6.route.mtu_expires = 600 |
578 | net.ipv6.route.min_adv_mss = 1220 |
579 | net.ipv6.route.gc_min_interval_ms = 500 |
580 | net.ipv6.icmp.ratelimit = 1000 |
581 | net.ipv6.bindv6only = 0 |
582 | net.ipv6.ip6frag_secret_interval = 600 |
583 | net.ipv6.mld_max_msf = 64 |
584 | net.unix.max_dgram_qlen = 10 |
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