Howdy peeps,
I’ve had some issues with IPv6 and a dedicated server.
I’m running Ubuntu 18.04, with netplan. The setup used to work well, but somewhere along a few docker installs, and some other installations, the IPv6 setup broke.
I was able to ping6 just fine, but now all I get is: connect: Network is unreachable when I try ping6 google.com
Here’s the output of ifconfig:
br-56088100d564: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.18.0.1 netmask 255.255.0.0 broadcast 172.18.255.255
inet6 fe80::42:f9ff:fe99:fc2e prefixlen 64 scopeid 0x20<link>
ether 02:42:f9:99:fc:2e txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 296 bytes 29789 (29.7 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:c1:d7:bf:45 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp5s0f1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 169.254.108.161 netmask 255.255.0.0 broadcast 169.254.255.255
inet6 2a01:xxxx:x:xxxx::5 prefixlen 128 scopeid 0x0<global>
inet6 2a01:xxxx:x:xxxx::2 prefixlen 128 scopeid 0x0<global>
inet6 2a01:xxxx:x:xxxx::6 prefixlen 128 scopeid 0x0<global>
inet6 2a01:xxxx:x:xxxx::3 prefixlen 128 scopeid 0x0<global>
inet6 fe80::3e4a:92ff:fef3:38cd prefixlen 64 scopeid 0x20<link>
inet6 2a01:xxxx:x:xxxx::4 prefixlen 128 scopeid 0x0<global>
ether 3c:4a:92:f3:38:cd txqueuelen 1000 (Ethernet)
RX packets 49260 bytes 34545596 (34.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 39017 bytes 12228931 (12.2 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device memory 0xc0460000-c047ffff
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 85180 bytes 52522599 (52.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 85180 bytes 52522599 (52.5 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vetheb72794: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::40cb:5cff:fe2c:17a2 prefixlen 64 scopeid 0x20<link>
ether 42:cb:5c:2c:17:a2 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 303 bytes 30535 (30.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vethfb14277: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::d0b6:bff:feee:9b4c prefixlen 64 scopeid 0x20<link>
ether d2:b6:0b:ee:9b:4c txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 301 bytes 30339 (30.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wg0: flags=209<UP,POINTOPOINT,RUNNING,NOARP> mtu 1420
inet 10.9.0.1 netmask 255.255.255.0 destination 10.9.0.1
inet6 fd42:42:42::1 prefixlen 64 scopeid 0x0<global>
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 1000 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
and here is the output of ip a:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp5s0f0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 3c:4a:92:f3:38:cc brd ff:ff:ff:ff:ff:ff
3: enp5s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 3c:4a:92:f3:38:cd brd ff:ff:ff:ff:ff:ff
inet 169.254.108.161/16 brd 169.254.255.255 scope link enp5s0f1
valid_lft forever preferred_lft forever
inet 7x.xxx.xx.162/24 brd 7x.xxx.xx.255 scope global enp5s0f1
valid_lft forever preferred_lft forever
inet 7x.xxx.xx.163/24 brd 7x.xxx.xx.255 scope global secondary enp5s0f1
valid_lft forever preferred_lft forever
inet 7x.xxx.xx.164/24 brd 7x.xxx.xx.255 scope global secondary enp5s0f1
valid_lft forever preferred_lft forever
inet 7x.xxx.xx.165/24 brd 7x.xxx.xx.255 scope global secondary enp5s0f1
valid_lft forever preferred_lft forever
inet 7x.xxx.xx.166/24 brd 7x.xxx.xx.255 scope global secondary enp5s0f1
valid_lft forever preferred_lft forever
inet6 2a01:xxxx:x:xxxx::6/128 scope global
valid_lft forever preferred_lft forever
inet6 2a01:xxxx:x:xxxx::5/128 scope global
valid_lft forever preferred_lft forever
inet6 2a01:xxxx:x:xxxx::4/128 scope global
valid_lft forever preferred_lft forever
inet6 2a01:xxxx:x:xxxx::3/128 scope global
valid_lft forever preferred_lft forever
inet6 2a01:xxxx:x:xxxx::2/128 scope global
valid_lft forever preferred_lft forever
inet6 fe80::3e4a:92ff:fef3:38cd/64 scope link
valid_lft forever preferred_lft forever
4: wg0: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1420 qdisc noqueue state UNKNOWN group default qlen 1000
link/none
inet 10.9.0.1/24 scope global wg0
valid_lft forever preferred_lft forever
inet6 fd42:42:42::1/64 scope global
valid_lft forever preferred_lft forever
5: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:c1:d7:bf:45 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
valid_lft forever preferred_lft forever
6: br-56088100d564: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
link/ether 02:42:f9:99:fc:2e brd ff:ff:ff:ff:ff:ff
inet 172.18.0.1/16 brd 172.18.255.255 scope global br-56088100d564
valid_lft forever preferred_lft forever
inet6 fe80::42:f9ff:fe99:fc2e/64 scope link
valid_lft forever preferred_lft forever
8: [email protected]: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-56088100d564 state UP group default
link/ether d2:b6:0b:ee:9b:4c brd ff:ff:ff:ff:ff:ff link-netnsid 1
inet6 fe80::d0b6:bff:feee:9b4c/64 scope link
valid_lft forever preferred_lft forever
10: [email protected]: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-56088100d564 state UP group default
link/ether 42:cb:5c:2c:17:a2 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet6 fe80::40cb:5cff:fe2c:17a2/64 scope link
valid_lft forever preferred_lft forever
I obviously broke something along the way, somehow. I’m back to uni, so despite messing around with it for quite a while I haven’t been able to fix it. I’d appreciate any help (I’m willing to pay - if you’d like to SSH in) since I don’t really have time to work on it.
I’m sure I’m not providing all the info you probably need, so please ask and I’ll post it.
Thanks again