Comment 14 for bug 1671951

Hm...

Our tests show that this is not fixed in cosmic or bionic.

https://jenkins.ubuntu.com/server/job/curtin-vmtest-devel-amd64/533/console
shows curtin's vmtest failing. Partial output shows:

======================================================================
ERROR: test_ipv6_mtu_smaller_than_ipv4_v6_iface_first (vmtests.test_network_mtu.CosmicTestNetworkMtu)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/var/lib/jenkins/slaves/torkoal/workspace/curtin-vmtest-devel-amd64/curtin-533/tests/vmtests/__init__.py", line 468, in wrapper
    raise RuntimeError(msg)
RuntimeError: skip_by_date(CosmicTestNetworkMtu.test_ipv6_mtu_smaller_than_ipv4_v6_iface_first) LP: #1671951 fixby=2018-09-26 removeby=2018-10-17: (PAST_FIXBY) Failed: 1480 != 1500
-------------------- >> begin captured stdout << ---------------------
iface=interface4 subnets=[{'address': '2001:4800:78ff:1b:be76:4eff:fe06:5000', 'netmask': 64, 'type': 'static', 'mtu': 1480}, {'address': '192.168.5.2/24', 'type': 'static', 'mtu': 1501}]
subnet:{'address': '2001:4800:78ff:1b:be76:4eff:fe06:5000', 'netmask': 64, 'type': 'static', 'mtu': 1480}
mtu_data:{'device': 1500, 'ipv6': 1500}
subnet_mtu=1480 ipv6_mtu=1500

--------------------- >> end captured stdout << ----------------------