On Fri, 7 Jan 2011, Bjoern A. Zeeb wrote:
On Fri, 7 Jan 2011, Daniel Eischen wrote:
When sending multicast packets to a socket that is _not_
bound to the multicast address, this generates bad UDP
checksums. This use to work and was broke sometime between
the middle of October and late December as far as I can
tell.
My very best guess would be: r215110
It doesn't look very harmful, but I'll try backing it out.
Otherwise the usual questions apply though I am almost certain you got
that right:
- dumps taken on the receiver side not the sender as
Yes, dumps were taken on both receiving Solaris 10
and FreeBSD hosts.
- NIC offload capabilities might confuse tcpdump and you might
want to turn them off and test as well w/o them
Disabling checksum offloading makes no difference, and the
problem occurs on all interfaces I have tested (sis, bfe,
wpi).
--
DE
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