nanog mailing list archives
Re: The stupidity of trying to "fix" DHCPv6
From: Iljitsch van Beijnum <iljitsch () muada com>
Date: Tue, 14 Jun 2011 16:01:25 +0200
On 14 jun 2011, at 10:20, Mikael Abrahamsson wrote:
On the AMSIX peering LAN there is more than 100pps of ND traffic (at least there was when we checked). Since they do not do IPv6 multicast intelligent handling (MLD snooping I guess) certain highend (legacy) router platforms run into trouble because all these packets are punted to RP.
That is really pathetic. I thought that any Ethernet chip built the previous decade could filter 64 or so multicast addresses in hardware. Only when you're subscribed to more multicast groups than what your Ethernet chip can filter in hardware does the software for an IPv4-only system have to encounter IPv6 multicasts, or an IPv6 system random neighbor solicitations, which are load balanced over a wide range of multicast addresses just for this reason. Also strange that there would be this much neighbor discovery traffic, probably the same reason AMS-IX used to have 15 kbps of ARP traffic: stale BGP peerings to addresses that no longer exist.
Current thread:
- Re: The stupidity of trying to "fix" DHCPv6, (continued)
- Re: The stupidity of trying to "fix" DHCPv6 sthaug (Jun 15)
- Re: The stupidity of trying to "fix" DHCPv6 Valdis . Kletnieks (Jun 15)
- Re: The stupidity of trying to "fix" DHCPv6 Joel Jaeggli (Jun 16)
- Re: The stupidity of trying to "fix" DHCPv6 Ray Soucy (Jun 16)
- Re: The stupidity of trying to "fix" DHCPv6 sthaug (Jun 16)
- Re: The stupidity of trying to "fix" DHCPv6 Ray Soucy (Jun 16)
- Re: The stupidity of trying to "fix" DHCPv6 sthaug (Jun 16)
- Re: The stupidity of trying to "fix" DHCPv6 Karl Auer (Jun 15)
- Re: The stupidity of trying to "fix" DHCPv6 Owen DeLong (Jun 16)
- Re: The stupidity of trying to "fix" DHCPv6 Leo Bicknell (Jun 14)
- Re: The stupidity of trying to "fix" DHCPv6 Iljitsch van Beijnum (Jun 14)
- Re: The stupidity of trying to "fix" DHCPv6 Ricky Beam (Jun 14)
- Re: The stupidity of trying to "fix" DHCPv6 Owen DeLong (Jun 14)
- Re: The stupidity of trying to "fix" DHCPv6 Matthew Palmer (Jun 12)
- Re: The stupidity of trying to "fix" DHCPv6 Owen DeLong (Jun 13)
- Re: The stupidity of trying to "fix" DHCPv6 Iljitsch van Beijnum (Jun 11)
- Re: The stupidity of trying to "fix" DHCPv6 David Conrad (Jun 11)
- Re: The stupidity of trying to "fix" DHCPv6 Iljitsch van Beijnum (Jun 12)
- Re: The stupidity of trying to "fix" DHCPv6 Owen DeLong (Jun 11)
- Re: The stupidity of trying to "fix" DHCPv6 Blake Dunlap (Jun 11)
- Re: The stupidity of trying to "fix" DHCPv6 Iljitsch van Beijnum (Jun 12)