Public bug reported:
This bug was fixed upstream by Debian: https://bugs.debian.org/cgi-
bin/bugreport.cgi?bug=651903
Essentially, "service iptables-persistent save" will always attempt to save
both ipv4 and ipv6 rules.
If ipv6 is disabled, aka:
- net.ipv6.conf.all.disable_ipv6 = 1
- net.ipv6.conf.default.disable_ipv6 = 1
- net.ipv6.conf.lo.disable_ipv6 = 1
iptables-persistent will fail with the following message:
# service iptables-persistent save
* Saving rules...
* IPv4...
* IPv6...
ip6tables-save v1.4.12: Cannot initialize: Address family not
supported by protocol
Hitting this bug under Ubuntu 12.04 currently with the latest version of these
packages:
ii iptables 1.4.12-1ubuntu5
administration tools for packet filtering and NAT
ii iptables-persistent 0.5.3ubuntu2
boot-time loader for iptables rules
It doesn't look like I'm able to reproduce this on Ubuntu 14.04 with the latest
version of these packages:
ii iptables 1.4.21-1ubuntu1 amd64
administration tools for packet filtering and NAT
ii iptables-persistent 0.5.7 all
boot-time loader for iptables rules
Can we backport the necessary patch to precise ?
** Affects: iptables-persistent (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1412979
Title:
iptables-persistent fails to save if ipv6 is disabled
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