[clamav-users] Freshclam IPv6 error messages on IPv4-only systems

Tilman Schmidt tschmidt at cardtech.de
Wed Jul 4 09:57:56 EDT 2018

Am 04.07.2018 um 15:42 schrieb Walter H.:
> On 04.07.2018 15:00, Matt Vander Werf wrote:
>> This has been mentioned at various points in several threads over the
>> past week or two (sometimes off-hand), but just wanted to somewhat
>> consolidate them here and also add my +1 to getting this bug addressed
>> in ClamAV soon!
>> Per [1]:
>> > This is a ipv4 site, and I occasionally get ipv6 error messages --
>> > maybe 4 a week. They don't seem to cause any particular problem. A
>> > freshclam.config option to disable ipv6 would fix that. Or maybe a
>> > "protocol {ipv4|ipv6|any}" option.
> just a hint
> even if your host is IPv4 only, is IPv6 enabled and do you have a
> fe80::xxx address?
> just try to really disable IPv6 at host/kernel layer
> e.g.
> this entry in /etc/sysctl.conf
> net.ipv6.conf.eth1.disable_ipv6 = 1
> disables IPv6 at port eth1 at all, there is no fe80:xxx address at this
> port ...

The message Matt reported:

  ERROR: Can't create new socket: Address family not supported by protocol

would seem to indicate that IPv6 is indeed completely disabled but
freshclam still tried to create an IPv6 socket anyway.

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