The following upstream patch is missing in ubuntu-18.04: ab5098fa25b9 ("ip6_gre: fix tunnel list corruption for x-netns").
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ab5098fa25b9
The following upstream patch is missing in ubuntu-18.04: ab5098fa25b9 ("ip6_gre: fix tunnel list corruption for x-netns").
https:/ /git.kernel. org/pub/ scm/linux/ kernel/ git/torvalds/ linux.git/ commit/ ?id=ab5098fa25b 9