Re: [VRRP] VRRPv3 IPv6 RFC-5798 checksum

Tomoyuki Sahara <sahara@surt.net> Thu, 10 May 2012 03:04 UTC

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Date: Thu, 10 May 2012 12:04:22 +0900
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From: Tomoyuki Sahara <sahara@surt.net>
To: joe mcfar <jrtcmcfar@gmail.com>
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Subject: Re: [VRRP] VRRPv3 IPv6 RFC-5798 checksum
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Hi,

> I’m interpreting RFC-5798 section 5.2.8 to say to calculate the checksum
> over both the VRRPv3 packet data starting with the version field, AND over
> the IPv6 pseudo-header (source, destination IPv6 addresses, upper layer
> packet length, zero field, and next header of 112 for VRRP.)

Our implementation calculates the checksum with IPv6 pseudo-header as
described in RFC5798.  IMHO that vendor's implementation does not conform
to RFC5798 and so it is not interoperable with RFC5798 implementations.


Thanks,
Tomoyuki