On Wed, 2019-05-29 at 12:23 -0400, Brian J. Murrell wrote:
On Wed, 2019-05-29 at 09:28 +0200, Thomas Haller via networkmanager- list wrote:If this is happening, when you kill NetworkManager with SIGKILL, it would not give NetworkManager to cleanup... sudo killall -SIGKILL NetworkManager (and veryify that NetworkManager is indeed not running. Maybe first `systemctl mask NetworkManager`, so that systemd won't restart it).Are you suggesting that I kill NM with SIGKILL as a debugging step to see if the RSes still stop when stopping NM?
Yes.
If so, that was an interesting experiment: # killall -SIGKILL NetworkManager # ps -ef | grep Network root 15001 1 0 12:02 ? 00:00:00 /usr/sbin/NetworkManager --no-daemon So clearly systemd restarted it, but it's not flooding RSes after the restart.
Ah ok. That's what I meant with first masking NetworkManager.
I even waited 17 minutes and still no flooding. I want to leave it like this in case there is anything you want me to investigate with it.
After restart, NetworkManager will reset all kinds of sysctls and reconfigure the link. So, it's not clear why the flodding stopped. It would be interesting whether those RS were sent by NetworkManager itself (or somebody else, like kernel). If you kill NetworkManager with SIGKILL (without letting NetworkManager restart), it would not give NetworkManager time to do anything. If that stops the flodding, then the messages were sent by NetworkManager -- otherwise not.
Otherwise I will continue on with the second part of the experiment where I mask the service in systemd and kill it with a KILL and see what happens.
grep -R ^ /proc/sys/net/ipv6/conf/
Thanks. It would be most interesting to see them at the moment when the flodding happen.s
Currently that's: /proc/sys/net/ipv6/conf/all/accept_dad:0 /proc/sys/net/ipv6/conf/all/accept_ra:1 /proc/sys/net/ipv6/conf/all/accept_ra_defrtr:1 /proc/sys/net/ipv6/conf/all/accept_ra_pinfo:1 /proc/sys/net/ipv6/conf/all/accept_ra_rt_info_max_plen:0 /proc/sys/net/ipv6/conf/all/accept_ra_rtr_pref:1 /proc/sys/net/ipv6/conf/all/accept_redirects:1 /proc/sys/net/ipv6/conf/all/accept_source_route:0 /proc/sys/net/ipv6/conf/all/autoconf:1 /proc/sys/net/ipv6/conf/all/dad_transmits:1 /proc/sys/net/ipv6/conf/all/disable_ipv6:0 /proc/sys/net/ipv6/conf/all/enhanced_dad:1 /proc/sys/net/ipv6/conf/all/force_mld_version:0 /proc/sys/net/ipv6/conf/all/force_tllao:0 /proc/sys/net/ipv6/conf/all/forwarding:0 /proc/sys/net/ipv6/conf/all/hop_limit:64 /proc/sys/net/ipv6/conf/all/keep_addr_on_down:0 /proc/sys/net/ipv6/conf/all/max_addresses:16 /proc/sys/net/ipv6/conf/all/max_desync_factor:600 /proc/sys/net/ipv6/conf/all/mc_forwarding:0 /proc/sys/net/ipv6/conf/all/mldv1_unsolicited_report_interval:10000 /proc/sys/net/ipv6/conf/all/mldv2_unsolicited_report_interval:1000 /proc/sys/net/ipv6/conf/all/mtu:1280 /proc/sys/net/ipv6/conf/all/ndisc_notify:0 /proc/sys/net/ipv6/conf/all/optimistic_dad:0 /proc/sys/net/ipv6/conf/all/proxy_ndp:0 /proc/sys/net/ipv6/conf/all/regen_max_retry:3 /proc/sys/net/ipv6/conf/all/router_probe_interval:60 /proc/sys/net/ipv6/conf/all/router_solicitation_delay:1 /proc/sys/net/ipv6/conf/all/router_solicitation_interval:4 /proc/sys/net/ipv6/conf/all/router_solicitations:3 grep: /proc/sys/net/ipv6/conf/all/stable_secret: Input/output error /proc/sys/net/ipv6/conf/all/temp_prefered_lft:86400 /proc/sys/net/ipv6/conf/all/temp_valid_lft:604800 /proc/sys/net/ipv6/conf/all/use_optimistic:0 /proc/sys/net/ipv6/conf/all/use_tempaddr:0 /proc/sys/net/ipv6/conf/default/accept_dad:1 /proc/sys/net/ipv6/conf/default/accept_ra:1 /proc/sys/net/ipv6/conf/default/accept_ra_defrtr:1 /proc/sys/net/ipv6/conf/default/accept_ra_pinfo:1 /proc/sys/net/ipv6/conf/default/accept_ra_rt_info_max_plen:0 /proc/sys/net/ipv6/conf/default/accept_ra_rtr_pref:1 /proc/sys/net/ipv6/conf/default/accept_redirects:1 /proc/sys/net/ipv6/conf/default/accept_source_route:0 /proc/sys/net/ipv6/conf/default/autoconf:1 /proc/sys/net/ipv6/conf/default/dad_transmits:1 /proc/sys/net/ipv6/conf/default/disable_ipv6:0 /proc/sys/net/ipv6/conf/default/enhanced_dad:1 /proc/sys/net/ipv6/conf/default/force_mld_version:0 /proc/sys/net/ipv6/conf/default/force_tllao:0 /proc/sys/net/ipv6/conf/default/forwarding:0 /proc/sys/net/ipv6/conf/default/hop_limit:64 /proc/sys/net/ipv6/conf/default/keep_addr_on_down:0 /proc/sys/net/ipv6/conf/default/max_addresses:16 /proc/sys/net/ipv6/conf/default/max_desync_factor:600 /proc/sys/net/ipv6/conf/default/mc_forwarding:0 /proc/sys/net/ipv6/conf/default/mldv1_unsolicited_report_interval:100 00 /proc/sys/net/ipv6/conf/default/mldv2_unsolicited_report_interval:100 0 /proc/sys/net/ipv6/conf/default/mtu:1280 /proc/sys/net/ipv6/conf/default/ndisc_notify:0 /proc/sys/net/ipv6/conf/default/optimistic_dad:0 /proc/sys/net/ipv6/conf/default/proxy_ndp:0 /proc/sys/net/ipv6/conf/default/regen_max_retry:3 /proc/sys/net/ipv6/conf/default/router_probe_interval:60 /proc/sys/net/ipv6/conf/default/router_solicitation_delay:1 /proc/sys/net/ipv6/conf/default/router_solicitation_interval:4 /proc/sys/net/ipv6/conf/default/router_solicitations:3 grep: /proc/sys/net/ipv6/conf/default/stable_secret: Input/output error /proc/sys/net/ipv6/conf/default/temp_prefered_lft:86400 /proc/sys/net/ipv6/conf/default/temp_valid_lft:604800 /proc/sys/net/ipv6/conf/default/use_optimistic:0 /proc/sys/net/ipv6/conf/default/use_tempaddr:0 /proc/sys/net/ipv6/conf/enp2s0/accept_dad:1 /proc/sys/net/ipv6/conf/enp2s0/accept_ra:1 /proc/sys/net/ipv6/conf/enp2s0/accept_ra_defrtr:0 /proc/sys/net/ipv6/conf/enp2s0/accept_ra_pinfo:0 /proc/sys/net/ipv6/conf/enp2s0/accept_ra_rt_info_max_plen:0 /proc/sys/net/ipv6/conf/enp2s0/accept_ra_rtr_pref:0 /proc/sys/net/ipv6/conf/enp2s0/accept_redirects:1 /proc/sys/net/ipv6/conf/enp2s0/accept_source_route:0 /proc/sys/net/ipv6/conf/enp2s0/autoconf:1 /proc/sys/net/ipv6/conf/enp2s0/dad_transmits:1 /proc/sys/net/ipv6/conf/enp2s0/disable_ipv6:0 /proc/sys/net/ipv6/conf/enp2s0/enhanced_dad:1 /proc/sys/net/ipv6/conf/enp2s0/force_mld_version:0 /proc/sys/net/ipv6/conf/enp2s0/force_tllao:0 /proc/sys/net/ipv6/conf/enp2s0/forwarding:0 /proc/sys/net/ipv6/conf/enp2s0/hop_limit:64 /proc/sys/net/ipv6/conf/enp2s0/keep_addr_on_down:0 /proc/sys/net/ipv6/conf/enp2s0/max_addresses:16 /proc/sys/net/ipv6/conf/enp2s0/max_desync_factor:600 /proc/sys/net/ipv6/conf/enp2s0/mc_forwarding:0 /proc/sys/net/ipv6/conf/enp2s0/mldv1_unsolicited_report_interval:1000 0 /proc/sys/net/ipv6/conf/enp2s0/mldv2_unsolicited_report_interval:1000 /proc/sys/net/ipv6/conf/enp2s0/mtu:1280 /proc/sys/net/ipv6/conf/enp2s0/ndisc_notify:0 /proc/sys/net/ipv6/conf/enp2s0/optimistic_dad:0 /proc/sys/net/ipv6/conf/enp2s0/proxy_ndp:0 /proc/sys/net/ipv6/conf/enp2s0/regen_max_retry:3 /proc/sys/net/ipv6/conf/enp2s0/router_probe_interval:60 /proc/sys/net/ipv6/conf/enp2s0/router_solicitation_delay:1 /proc/sys/net/ipv6/conf/enp2s0/router_solicitation_interval:4 /proc/sys/net/ipv6/conf/enp2s0/router_solicitations:3 grep: /proc/sys/net/ipv6/conf/enp2s0/stable_secret: Input/output error /proc/sys/net/ipv6/conf/enp2s0/temp_prefered_lft:86400 /proc/sys/net/ipv6/conf/enp2s0/temp_valid_lft:604800 /proc/sys/net/ipv6/conf/enp2s0/use_optimistic:0 /proc/sys/net/ipv6/conf/enp2s0/use_tempaddr:0 /proc/sys/net/ipv6/conf/lo/accept_dad:-1 /proc/sys/net/ipv6/conf/lo/accept_ra:1 /proc/sys/net/ipv6/conf/lo/accept_ra_defrtr:1 /proc/sys/net/ipv6/conf/lo/accept_ra_pinfo:1 /proc/sys/net/ipv6/conf/lo/accept_ra_rt_info_max_plen:0 /proc/sys/net/ipv6/conf/lo/accept_ra_rtr_pref:1 /proc/sys/net/ipv6/conf/lo/accept_redirects:1 /proc/sys/net/ipv6/conf/lo/accept_source_route:0 /proc/sys/net/ipv6/conf/lo/autoconf:1 /proc/sys/net/ipv6/conf/lo/dad_transmits:1 /proc/sys/net/ipv6/conf/lo/disable_ipv6:0 /proc/sys/net/ipv6/conf/lo/enhanced_dad:1 /proc/sys/net/ipv6/conf/lo/force_mld_version:0 /proc/sys/net/ipv6/conf/lo/force_tllao:0 /proc/sys/net/ipv6/conf/lo/forwarding:0 /proc/sys/net/ipv6/conf/lo/hop_limit:64 /proc/sys/net/ipv6/conf/lo/keep_addr_on_down:0 /proc/sys/net/ipv6/conf/lo/max_addresses:16 /proc/sys/net/ipv6/conf/lo/max_desync_factor:600 /proc/sys/net/ipv6/conf/lo/mc_forwarding:0 /proc/sys/net/ipv6/conf/lo/mldv1_unsolicited_report_interval:10000 /proc/sys/net/ipv6/conf/lo/mldv2_unsolicited_report_interval:1000 /proc/sys/net/ipv6/conf/lo/mtu:65536 /proc/sys/net/ipv6/conf/lo/ndisc_notify:0 /proc/sys/net/ipv6/conf/lo/optimistic_dad:0 /proc/sys/net/ipv6/conf/lo/proxy_ndp:0 /proc/sys/net/ipv6/conf/lo/regen_max_retry:3 /proc/sys/net/ipv6/conf/lo/router_probe_interval:60 /proc/sys/net/ipv6/conf/lo/router_solicitation_delay:1 /proc/sys/net/ipv6/conf/lo/router_solicitation_interval:4 /proc/sys/net/ipv6/conf/lo/router_solicitations:3 grep: /proc/sys/net/ipv6/conf/lo/stable_secret: Input/output error /proc/sys/net/ipv6/conf/lo/temp_prefered_lft:86400 /proc/sys/net/ipv6/conf/lo/temp_valid_lft:604800 /proc/sys/net/ipv6/conf/lo/use_optimistic:0 /proc/sys/net/ipv6/conf/lo/use_tempaddr:-1 But as above, right now it's not spamming RSes.
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