[Bug 263202] "route already in table" - even though it's not, and can't be deleted

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 05 May 2022 08:48:08 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263202

--- Comment #17 from Pat Maddox <pat@patmaddox.com> ---
(In reply to Zhenlei Huang from comment #16)

=== 12.3-RELEASE-p5

$ ifconfig tailscale0
tailscale0: flags=8043<UP,BROADCAST,RUNNING,MULTICAST> metric 0 mtu 1280
        options=80000<LINKSTATE>
        inet 100.123.67.255 netmask 0xffffffff broadcast 100.123.67.255
        inet6 fd7a:115c:a1e0:efe3::647b:43ff prefixlen 48
        groups: tun
        nd6 options=101<PERFORMNUD,NO_DAD>
        Opened by PID 21991

$ ping -c 1 100.123.67.255
PING 100.123.67.255 (100.123.67.255): 56 data bytes
64 bytes from 100.123.67.255: icmp_seq=0 ttl=64 time=0.041 ms

--- 100.123.67.255 ping statistics ---
1 packets transmitted, 1 packets received, 0.0% packet loss

$ netstat -4rn
Routing tables

Internet:
Destination        Gateway            Flags     Netif Expire
default            137.184.80.1       UGS      vtnet0
10.48.0.0/16       link#1             U        vtnet0
10.48.0.5          link#1             UHS         lo0
10.124.0.0/20      link#2             U        vtnet1
10.124.0.2         link#2             UHS         lo0
100.82.35.64/32    tailscale0         US     tailscal
100.100.100.100/32 tailscale0         US     tailscal
100.116.30.19/32   tailscale0         US     tailscal
100.116.80.150/32  tailscale0         US     tailscal
100.123.67.255     link#4             UHS         lo0
100.123.67.255/32  link#4             U      tailscal
127.0.0.1          link#3             UH          lo0



=== 13.0-RELEASE-p11

$ ifconfig tailscale0
tailscale0: flags=8043<UP,BROADCAST,RUNNING,MULTICAST> metric 0 mtu 1280
        options=80000<LINKSTATE>
        inet 100.116.80.150 netmask 0xffffffff broadcast 100.116.80.150
        inet6 fd7a:115c:a1e0:efe3::6474:5096 prefixlen 48
        groups: tun
        nd6 options=101<PERFORMNUD,NO_DAD>
        Opened by PID 1159

$ ping -c 1 100.116.80.150
PING 100.116.80.150 (100.116.80.150): 56 data bytes

--- 100.116.80.150 ping statistics ---
1 packets transmitted, 0 packets received, 100.0% packet loss

$ netstat -4rn
Routing tables

Internet:
Destination        Gateway            Flags     Netif Expire
default            137.184.176.1      UGS      vtnet0
10.48.0.0/16       link#1             U        vtnet0
10.48.0.6          link#1             UHS         lo0
10.124.0.0/20      link#2             U        vtnet1
10.124.0.3         link#2             UHS         lo0
100.82.35.64       link#4             UHS    tailscal
100.100.100.100    link#4             UHS    tailscal
100.116.30.19      link#4             UHS    tailscal
100.116.80.150     link#4             UH     tailscal
100.123.67.255     link#4             UHS    tailscal
127.0.0.1          link#3             UH          lo0

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