[148923] in North American Network Operators' Group
Re: Choice of address for IPv6 default gateway
daemon@ATHENA.MIT.EDU (Owen DeLong)
Thu Jan 26 08:50:04 2012
From: Owen DeLong <owen@delong.com>
In-Reply-To: <alpine.BSF.2.00.1201261043150.99152@mignon.ki.iif.hu>
Date: Thu, 26 Jan 2012 05:44:20 -0800
To: Mohacsi Janos <mohacsi@niif.hu>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
>>=20
>> Letting a host run slaac and then add a static address is not good
>> enough as the slaac address might be chosen for locally generated =
packets.
>=20
>=20
> Define for every application your bind address - locally generated =
packets will use it. If it is not possible Use RFC 3484 source address =
selection for selecting static source addresses.
>=20
Actually, RFC 3484 would be the preferred mechanism over configuring =
every application.
Application specific address binding should only be used for =
applications that need an exception to the host-wide source address =
selection choice.
+ Fewer surprises for your ops team
+ Lower probability of a mistake leading to incorrect =
source address selection
+ Reduced probability of configuration mistake time-bombs
+ Reduces the amount of configuration required for a host
Owen
