サーバーでアクションを起こさないとSSH・Sambaにログインできない

Question

端末側からSSHかSambaにアクセスする際、事前に

• サーバーから端末へpingを送る
• サーバーを再起動する
• $ sudo netplan applyを実行する

上記のいずれかを行わないとログインできません。
尚、その間Softether VPN等他のソフトウェアは難なく動作しています。

環境

Ubuntu Server 20.04.3 LTS

ARPテーブル

ログインできない時

Address                  HWtype  HWaddress           Flags Mask            Iface
172.31.183.243           ether   00:ae:b6:f2:5a:0f   C                     wlp1s0
192.168.20.15            ether   70:85:c2:7f:77:4f   C                     wlp1s0
_gateway                 ether   38:f8:5e:b4:1d:d2   C                     wlp1s0
_gateway                 ether   38:f8:5e:b4:1d:d2   C                     enx9096f349a509

netplan apply実行後

Address                  HWtype  HWaddress           Flags Mask            Iface
192.168.20.11            ether   52:4b:40:c1:2d:ca   C                     wlp1s0
_gateway                 ether   38:f8:5e:b4:1d:d2   C                     wlp1s0
_gateway                 ether   38:f8:5e:b4:1d:d2   C                     enx9096f349a509
_gateway                 ether   38:f8:5e:b4:1d:d2   C                     enx9096f349a509 

この時は192.168.20.11からSSHにログインしようとしていました。

syslog

Oct 12 08:58:22 home-server systemd[1]: packagekit.service: Succeeded.
Oct 12 09:17:01 home-server CRON[2678]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Oct 12 09:30:01 home-server CRON[2693]: (root) CMD ([ -x /etc/init.d/anacron ] && if [ ! -d /run/systemd/system ]; then /usr/sbin/invoke-rc.d anacron start >/dev/null; fi)
Oct 12 10:17:01 home-server CRON[2728]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Oct 12 10:30:01 home-server CRON[2744]: (root) CMD ([ -x /etc/init.d/anacron ] && if [ ! -d /run/systemd/system ]; then /usr/sbin/invoke-rc.d anacron start >/dev/null; fi)
Oct 12 10:59:42 home-server kernel: [10346.578441] perf: interrupt took too long (2522 > 2500), lowering kernel.perf_event_max_sample_rate to 79250
Oct 12 11:17:01 home-server CRON[2787]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Oct 12 11:17:57 home-server smbd[2791]: [2021/10/12 11:17:57.932864,  0] ../../lib/param/loadparm.c:800(lpcfg_map_parameter)
Oct 12 11:17:57 home-server smbd[2791]:   Unknown parameter encountered: "display charset"
Oct 12 11:17:57 home-server smbd[2791]: [2021/10/12 11:17:57.933719,  0] ../../lib/param/loadparm.c:1826(lpcfg_do_global_parameter)
Oct 12 11:17:57 home-server smbd[2791]:   Ignoring unknown parameter "display charset"
Oct 12 11:17:57 home-server smbd[2791]: [2021/10/12 11:17:57.934182,  0] ../../lib/param/loadparm.c:800(lpcfg_map_parameter)
Oct 12 11:17:57 home-server smbd[2791]:   Unknown parameter encountered: "bind interface only"
Oct 12 11:17:57 home-server smbd[2791]: [2021/10/12 11:17:57.934547,  0] ../../lib/param/loadparm.c:1826(lpcfg_do_global_parameter)
Oct 12 11:17:57 home-server smbd[2791]:   Ignoring unknown parameter "bind interface only"
Oct 12 11:18:25 home-server smbd[2791]: [2021/10/12 11:18:25.557798,  0] ../../lib/param/loadparm.c:800(lpcfg_map_parameter)
Oct 12 11:18:25 home-server smbd[2791]:   Unknown parameter encountered: "display charset"
Oct 12 11:18:25 home-server smbd[2791]: [2021/10/12 11:18:25.558354,  0] ../../lib/param/loadparm.c:1826(lpcfg_do_global_parameter)
Oct 12 11:18:25 home-server smbd[2791]:   Ignoring unknown parameter "display charset"
Oct 12 11:18:25 home-server smbd[2791]: [2021/10/12 11:18:25.558813,  0] ../../lib/param/loadparm.c:800(lpcfg_map_parameter)
Oct 12 11:18:25 home-server smbd[2791]:   Unknown parameter encountered: "bind interface only"
Oct 12 11:18:25 home-server smbd[2791]: [2021/10/12 11:18:25.559173,  0] ../../lib/param/loadparm.c:1826(lpcfg_do_global_parameter)
Oct 12 11:18:25 home-server smbd[2791]:   Ignoring unknown parameter "bind interface only"
Oct 12 11:22:13 home-server kernel: [11698.119609] perf: interrupt took too long (3192 > 3152), lowering kernel.perf_event_max_sample_rate to 62500
Oct 12 11:25:42 home-server kernel: [11906.619819] perf: interrupt took too long (6449 > 3990), lowering kernel.perf_event_max_sample_rate to 31000
Oct 12 11:30:01 home-server CRON[2831]: (root) CMD ([ -x /etc/init.d/anacron ] && if [ ! -d /run/systemd/system ]; then /usr/sbin/invoke-rc.d anacron start >/dev/null; fi)
Oct 12 11:37:39 home-server systemd-resolved[910]: Using degraded feature set (UDP) for DNS server 192.168.20.1.
Oct 12 11:45:57 home-server systemd-resolved[910]: Using degraded feature set (TCP) for DNS server 192.168.20.1.
Oct 12 11:53:17 home-server kernel: [13561.847882] perf: interrupt took too long (8078 > 8061), lowering kernel.perf_event_max_sample_rate to 24750
Oct 12 11:55:13 home-server systemd-resolved[910]: message repeated 2 times: [ Using degraded feature set (TCP) for DNS server 192.168.20.1.]
Oct 12 12:02:06 home-server smbd[2791]: [2021/10/12 12:02:06.211422,  0] ../../lib/param/loadparm.c:800(lpcfg_map_parameter)
Oct 12 12:02:06 home-server smbd[2791]:   Unknown parameter encountered: "display charset"
Oct 12 12:02:06 home-server smbd[2791]: [2021/10/12 12:02:06.235797,  0] ../../lib/param/loadparm.c:1826(lpcfg_do_global_parameter)
Oct 12 12:02:06 home-server smbd[2791]:   Ignoring unknown parameter "display charset"
Oct 12 12:02:06 home-server smbd[2791]: [2021/10/12 12:02:06.236304,  0] ../../lib/param/loadparm.c:800(lpcfg_map_parameter)
Oct 12 12:02:06 home-server smbd[2791]:   Unknown parameter encountered: "bind interface only"
Oct 12 12:02:06 home-server smbd[2791]: [2021/10/12 12:02:06.236675,  0] ../../lib/param/loadparm.c:1826(lpcfg_do_global_parameter)
Oct 12 12:02:06 home-server smbd[2791]:   Ignoring unknown parameter "bind interface only"
Oct 12 12:17:02 home-server CRON[2910]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Oct 12 12:30:01 home-server CRON[3158]: (root) CMD ([ -x /etc/init.d/anacron ] && if [ ! -d /run/systemd/system ]; then /usr/sbin/invoke-rc.d anacron start >/dev/null; fi)
Oct 12 12:30:41 home-server kernel: [15805.556544] perf: interrupt took too long (10715 > 10097), lowering kernel.perf_event_max_sample_rate to 18500
Oct 12 12:31:03 home-server systemd-resolved[910]: Using degraded feature set (UDP) for DNS server 192.168.20.1.
Oct 12 13:12:45 home-server systemd-resolved[910]: message repeated 2 times: [ Using degraded feature set (UDP) for DNS server 192.168.20.1.]
Oct 12 13:17:01 home-server CRON[3565]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Oct 12 13:30:01 home-server CRON[3581]: (root) CMD ([ -x /etc/init.d/anacron ] && if [ ! -d /run/systemd/system ]; then /usr/sbin/invoke-rc.d anacron start >/dev/null; fi)
Oct 12 14:17:01 home-server CRON[3625]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Oct 12 14:30:01 home-server CRON[3638]: (root) CMD ([ -x /etc/init.d/anacron ] && if [ ! -d /run/systemd/system ]; then /usr/sbin/invoke-rc.d anacron start >/dev/null; fi)
Oct 12 14:42:05 home-server systemd-resolved[910]: Using degraded feature set (TCP) for DNS server 192.168.20.1.
Oct 12 14:58:06 home-server systemd-resolved[910]: Using degraded feature set (TCP) for DNS server 192.168.20.1.
Oct 12 15:17:01 home-server CRON[3688]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly) 
Oct 12 15:30:01 home-server CRON[3706]: (root) CMD ([ -x /etc/init.d/anacron ] && if [ ! -d /run/systemd/system ]; then /usr/sbin/invoke-rc.d anacron start >/dev/null; fi) 

SSH・Sambaにログインできなくなった前後のログ

Answer 1

別サーバーで環境を再構築したところ治りました。
お騒がせしました。