Before the update: ++++++++++++++++++ root@ubuntu2004:~/linux# uname -a Linux ubuntu2004 5.4.0-124-generic #140-Ubuntu SMP Thu Aug 4 02:23:37 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux root@ubuntu2004:~/linux# tools/testing/selftests/net/fib_nexthop_nongw.sh TEST: nexthop: get route with nexthop without gw [FAIL] TEST: nexthop: ping through nexthop without gw [FAIL]
With the new focal kernel: ++++++++++++++++++++++++++ root@ubuntu2004:~/linux# uname -a Linux ubuntu2004 5.4.0-128-generic #144-Ubuntu SMP Tue Sep 20 11:00:04 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux root@ubuntu2004:~/linux# tools/testing/selftests/net/fib_nexthop_nongw.sh TEST: nexthop: get route with nexthop without gw [ OK ] TEST: nexthop: ping through nexthop without gw [ OK ] With the new jammy kernel: ++++++++++++++++++++++++++ root@ubuntu2004:~/linux# uname -a Linux ubuntu2004 5.15.0-50-generic #56-Ubuntu SMP Tue Sep 20 13:23:26 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux root@ubuntu2004:~/linux# tools/testing/selftests/net/fib_nexthop_nongw.sh TEST: nexthop: get route with nexthop without gw [ OK ] TEST: nexthop: ping through nexthop without gw [ OK ] -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1988809 Title: ip/nexthop: fix default address selection for connected nexthop Status in linux package in Ubuntu: Fix Released Status in linux source package in Focal: Fix Committed Status in linux source package in Jammy: Fix Committed Bug description: [Impact] Packets sent by userland apps are rejected/dropped if the source address is not specified and the corresponding route is using a connected nexthop object. This bug exists since linux v5.3 and has been fixed in v5.19 by the following upstream commits: - 747c14307214 ("ip: fix dflt addr selection for connected nexthop") https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=747c14307214 - cd72e61bad14 ("selftests/net: test nexthop without gw") https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cd72e61bad14 - eb55dc09b5dd ("ip: fix triggering of 'icmp redirect'") https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eb55dc09b5dd The last commit (v6.0) fixes a regression introduced by the first commit. [Test Case] A detailed test case is explained in the first commit and a self-test is added in the second commit. [Regression Potential] The patch modifies some internal routing states. It has been living in the upstream trees for 2 months and the reported regression about icmp redirects has been fixed. The risk of regression should be contained. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1988809/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
