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avahi error: IP_ADD_MEMBERSHIP failed: No buffer space available

DISCUSSION Ben Greear 2 participants 2 messages May 30, 2006

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Ben Greear

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#0 lore raw

This is an FC5 64-bit system with 1GB RAM and dual-core Opteron. When I create a bunch of virtual interfaces, I see this in /var/log/messages. The kernel is 2.6.16.16 plus my hacks.

At first look, it doesn't appear I actually need the avahi tool, so I'm just going to disable it. But, I thought someone might want to be aware of the problem...

May 30 11:01:37 x64-1u avahi-daemon[2022]: Joining mDNS multicast group on inter
face eth2#16.IPv4 with address 172.1.2.18.
May 30 11:01:37 x64-1u avahi-daemon[2022]: Registering new address record for 17
2.1.2.18 on eth2#16.
May 30 11:01:37 x64-1u avahi-daemon[2022]: New relevant interface eth2#17.IPv4 f
or mDNS.
May 30 11:01:37 x64-1u avahi-daemon[2022]: Joining mDNS multicast group on inter
face eth2#17.IPv4 with address 172.1.2.19.
May 30 11:01:37 x64-1u avahi-daemon[2022]: IP_ADD_MEMBERSHIP failed: No buffer s
pace available
May 30 11:01:37 x64-1u avahi-daemon[2022]: Registering new address record for 17
2.1.2.19 on eth2#17.
May 30 11:01:37 x64-1u avahi-daemon[2022]: New relevant interface eth2#18.IPv4 f
or mDNS.
May 30 11:01:37 x64-1u avahi-daemon[2022]: Joining mDNS multicast group on inter
face eth2#18.IPv4 with address 172.1.2.20.
May 30 11:01:37 x64-1u avahi-daemon[2022]: IP_ADD_MEMBERSHIP failed: No buffer s

pace available

Thanks,
Ben

Signature · 2 lines
Ben Greear <[email protected]>
Candela Technologies Inc  http://www.candelatech.com
#1 lore raw

Am Dienstag 30 Mai 2006 20:07 schrieb Ben Greear:

Quoted 4 lines
May 30 11:01:37 x64-1u avahi-daemon[2022]: Joining mDNS multicast group on
inter face eth2#18.IPv4 with address 172.1.2.20.
May 30 11:01:37 x64-1u avahi-daemon[2022]: IP_ADD_MEMBERSHIP failed: No

buffer s pace available

there is a configurable limit of system wide multicast memberships. As you're the guy who creates gazillions of VLAN interfaces, you will surely hit it. Check /proc/sys/net/ipv4/igmp_max_memberships. (This is also relevant for people running OSPF over many VLANs).

Stefan