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system-traffic: Make vxlan frag test more reliable.
Depending on the kernel version in use, the nf_conntrack module may register hooks for each namespace and execute conntrack prior to passing packets to OVS (or not). In cases where this happens, the previous flow table in this test would trust the local stack's connection tracking and use it rather than sending packets through conntrack itself (and therefore handling IP defragmentation/fragmentation). This patch revealed two fatal datapath bugs, fixed by these commits: 86c2eb4 datapath: Fix panic sending IP frags over tunnels. 792e5ed datapath: inet: frag: Always orphan skbs inside ip_defrag(). Signed-off-by: Joe Stringer <joe@ovn.org> Acked-by: Ben Pfaff <blp@ovn.org>
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