Date: Mon, 27 Feb 2017 17:56:15 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-xen@FreeBSD.org Subject: [Bug 188990] [xen] dhclient(8) does not accept DHCP Offer on FreeBSD 10 as Xen DomU Guest Message-ID: <bug-188990-23905-xy74TyfxQu@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-188990-23905@https.bugs.freebsd.org/bugzilla/> References: <bug-188990-23905@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D188990 --- Comment #12 from Bhavesh Davda <bhavesh.davda@gmail.com> --- (In reply to Roger Pau Monn=C3=83=C2=A9 from comment #8) Yes, I know this change to dhclient seems unfortunately 'hackish' but is necessary because dhcilent relies on an interface [bpf(4)] to send and rece= ive packets, which doesn't have a way to indicate if certain packet processing (e.g. UDP checksum validation) should be skipped because it's been offloade= d to the NIC. Besides, if you look at upstream mainline ISC DHCP, there is similar code f= or Linux guests as well: My proposed patch took the approach of making the bare minimal fix to the mainline FreeBSD dhclient to achieve the same end result. From: Thomas Markwalder <tmark@isc.org> Date: Thu, 18 Sep 2014 15:25:02 -0400 Subject: [PATCH 1/1] [master] Checkum handling fixes Merges in rt22806 ... --- a/RELNOTES +++ b/RELNOTES @@ -95,6 +95,25 @@ by Eric Young (eay@cryptsoft.com). are within the declared. Thanks to Jiri Popelka at Red Hat for the bug report and patch. [ISC-Bugs #32453] + [ISC-Bugs #17766] + [ISC-Bugs #18510] + [ISC-Bugs #23698] + [ISC-Bugs #28883] + +- Addressed checksum issues: + Added checksum readiness check to Linux packet filtering which eliminates + invalid packet drops due to checksum errors when checksum offloading is + in use. Based on dhcp-4.2.2-xen-checksum.patch made to the Fedora proje= ct. + [ISC-Bugs #22806] + [ISC-Bugs #15902] + [ISC-Bugs #17739] + [ISC-Bugs #18010] + [ISC-Bugs #22556] + [ISC-Bugs #29769] + Inbound packets with UPD checksums of 0xffff now validate correctly rath= er + than being dropped. + [ISC-Bus #24216] + [ISC-Bus #25587] --=20 You are receiving this mail because: You are the assignee for the bug.=
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