[ipv6-wg] not announcing IXP IPv6 peering lan prefixes in global BGP table possibly breaks PMTUD
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Eric Vyncke (evyncke)
evyncke at cisco.com
Mon Jul 25 17:24:10 CEST 2011
5) easier said than done as uRPF checks are done solely at layer-3 and nobody wants to send rejected packets to the route processor, don't we? > -----Original Message----- > From: ipv6-wg-admin at ripe.net [mailto:ipv6-wg-admin at ripe.net] On Behalf Of > Gert Doering > Sent: lundi 25 juillet 2011 05:43 > To: Sander Steffann > Cc: Christian Seitz; ipv6-wg at ripe.net > Subject: Re: [ipv6-wg] not announcing IXP IPv6 peering lan prefixes in global > BGP table possibly breaks PMTUD > > Hi, > > On Mon, Jul 25, 2011 at 11:37:05AM +0200, Sander Steffann wrote: > > > 5) ? > > > > Adapt uRPF so that it does't filter ICMP error messages. Whether > > this is useful depends on how much ICMP error messages with unreachable > > source addresses we expect to see? When people/organizations start > > to use ULA addresses it might be more than we see now. > > Indeed this sounds like a good "option #5". > > Christian, can your gear do IPv6-uRPF-with-permit-ACLs in Hardware? > > (My gear can only do IPv6-uRPF in software, no matter what options I use, > so we currently filter by ACL) > > Gert Doering > -- NetMaster > -- > have you enabled IPv6 on something today...? > > SpaceNet AG Vorstand: Sebastian v. Bomhard > Joseph-Dollinger-Bogen 14 Aufsichtsratsvors.: A. Grundner-Culemann > D-80807 Muenchen HRB: 136055 (AG Muenchen) > Tel: +49 (89) 32356-444 USt-IdNr.: DE813185279
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