[Bug 1335] New: iptables-restore will crash if -6 rules are present

[bugzilla-daemon at netfilter.org]

https://bugzilla.netfilter.org/show_bug.cgi?id=1335

            Bug ID: 1335
           Summary: iptables-restore will crash if -6 rules are present
           Product: iptables
           Version: unspecified
          Hardware: All
                OS: Debian GNU/Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: iptables-restore
          Assignee: netfilter-buglog at lists.netfilter.org
          Reporter: ingroxd at tutanota.com

iptables-restore (v1.8.2) crashes when loading a ruleset containing -6 rules.

This is inconsistent with the iptables manual:
-6, --ipv6
  If a rule using the -6 option is inserted with (and only with)
iptables-restore, it will be silently ignored. Any other uses will throw an
error. This  option  allows  IPv4  and IPv6  rules  in  a single rule file for
use with both iptables-restore and ip6tables-restore. This option has no effect
in ip6tables and ip6tables-restore.

Also, the error message is always a inconsistent, telling something else is the
problem.

In my case:
iptables-restore v1.8.2 (nf_tables): multiport needs `-p tcp', `-p udp', `-p
udplite', `-p sctp' or `-p dccp'

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