On Fri, 7 Jan 2011, Daniel Eischen wrote: > 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. Backing this out seems to fix it. I'll have to test it more after I get some sleep ;-) > >> 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). -- DEReceived on Fri Jan 07 2011 - 10:42:03 UTC
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