The (redacted) output of ip addr show is:
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: eth0: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc fq_codel
state UP group default qlen 1000
link/ether ...my mac... brd ff:ff:ff:ff:ff:ff
inet 192.168.1.1/24 brd 192.168.1.255 scope global eth0
valid_lft forever preferred_lft forever
inet6 ...internet ipv6 addr.../64 scope global
valid_lft forever preferred_lft forever
inet6 ...internet ipv6 addr.../64 scope global
valid_lft forever preferred_lft forever
inet6 ...internet ipv6 addr.../64 scope global
valid_lft forever preferred_lft forever
inet6 fe80::21e:6ff:fe32:613b/64 scope link
valid_lft forever preferred_lft forever
3: vlan4@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UP group default qlen 1000
link/ether ...my mac... brd ff:ff:ff:ff:ff:ff
inet ...internet ipv4.../24 brd ...internet ipv4....255 scope global
dynamic vlan4
valid_lft 351763sec preferred_lft 351763sec
inet6 fe80::21e:6ff:fe32:613b/64 scope link
valid_lft forever preferred_lft forever
4: vlan5@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UP group default qlen 1000
link/ether ...my mac... brd ff:ff:ff:ff:ff:ff
inet 192.168.2.1/24 brd 192.168.2.255 scope global vlan5
valid_lft forever preferred_lft forever
inet6 fd17:6e78:d6ba:c144::1/64 scope global
valid_lft forever preferred_lft forever
inet6 fe80::21e:6ff:fe32:613b/64 scope link
valid_lft forever preferred_lft forever
5: vlan6@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UP group default qlen 1000
link/ether ...my mac... brd ff:ff:ff:ff:ff:ff
inet 192.168.3.1/24 brd 192.168.3.255 scope global vlan6
valid_lft forever preferred_lft forever
inet6 fd17:6e78:d6ba:c145::1/64 scope global
valid_lft forever preferred_lft forever
inet6 fe80::21e:6ff:fe32:613b/64 scope link
valid_lft forever preferred_lft forever
6: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default qlen 1000
link/sit 0.0.0.0 brd 0.0.0.0
7: he-ipv6@NONE: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1480 qdisc noqueue state
UNKNOWN group default qlen 1000
link/sit ...internet ipv4... peer ...internet ipv4...
inet6 ...internet ipv6 addr.../64 scope global
valid_lft forever preferred_lft forever
inet6 fe80::5ce9:ca14/64 scope link
valid_lft forever preferred_lft forever
8: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default qlen 1000
link/ipip 0.0.0.0 brd 0.0.0.0
9: ipv4-tunnel@NONE: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1480 qdisc noqueue
state UNKNOWN group default qlen 1000
link/ipip ...internet ipv4... peer ...internet ipv4...
inet ...internet ipv4.../32 scope global ipv4-tunnel
valid_lft forever preferred_lft forever
inet6 fe80::200:5efe:5ce9:ca14/64 scope link
valid_lft forever preferred_lft forever
10: wg0: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1420 qdisc noqueue state UNKNOWN
group default qlen 1000
link/none
inet 192.168.10.1/24 scope global wg0
valid_lft forever preferred_lft forever
inet6 fd18:6de:3816:db02::1/64 scope global
valid_lft forever preferred_lft forever
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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to dnsmasq in Ubuntu.
https://bugs.launchpad.net/bugs/1916462
Title:
dnsmasq failed to send packet: Network is unreachable
Status in dnsmasq package in Ubuntu:
New
Bug description:
the log shows this:
Feb 22 09:37:53 myserver dnsmasq[2259]: failed to send packet: Network
is unreachable
repeatedly and frequently.
This is a known bug in dnsmasq and has been fixed upstream (according
to the thread quoted below). Apparently it is IPv6 related and
triggered by Windows and Mac clients. An extensive thread on the
subject is here on the OpenWRT forum:
https://forum.openwrt.org/t/security-advisory-2021-01-19-1-dnsmasq-
multiple-vulnerabilities/85903/123
I think this has been reported in the fallout of the quoted security
vulnerabilities. I don't think it is a security vulnerability in
itself.
dnsmasq version: 2.80-1.1ubuntu1.2
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: dnsmasq 2.80-1.1ubuntu1.2
Uname: Linux 5.4.98-219 armv7l
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: armhf
CasperMD5CheckResult: skip
Date: Mon Feb 22 09:34:12 2021
PackageArchitecture: all
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_GB.UTF-8
SHELL=/bin/bash
SourcePackage: dnsmasq
UpgradeStatus: Upgraded to focal on 2020-11-15 (98 days ago)
modified.conffile..etc.default.dnsmasq: [modified]
mtime.conffile..etc.default.dnsmasq: 2018-06-27T16:10:40.086905
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1916462/+subscriptions
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