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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: devel-bounces@openvz.org Errors-To: devel-bounces@openvz.org On 10/26/26 13:06, Eva Kurchatova wrote: > pass on a host where nothing does. Since commit 36707061d6ba ("udp: > allow forwarding of plain (non-fraglisted) UDP GRO packets") the > feature aggregates only datagrams GRO finds no socket for, and GRO > looks the socket up only once a tunnel socket exists on the host; the The lookup behind the static key comes from f2e9de210d50 ("udp: gro behind static key"), not from 36707061d6ba. And not only tunnels turn it on: setsockopt(UDP_GRO) does too, in any netns. > while nothing looks it up. > This tree made them pass by changing the kernel instead, in commit > 8ce3afeec4ca ("udp: let rx-udp-gro-forwarding aggregate under Blank line missing before this paragraph. checkpatch also wants "commit 8ce3afeec4ca" on one line. > +# The receiver of the GRO checks, behind the destination > +readonly RCV=3 [...] > +# Network between the destination and the receiver > +readonly RCV_NET_V4=192.168.2. Both comments restate the names, dropped. > + # Forwarded, the datagrams find no local socket, whatever tunnel the host has "whatever the host runs": not only tunnels, see above. > + ip link add name fwd$DST type veth peer name fwd$RCV > + ip link set dev fwd$DST netns $NS_DST up > + ip link set dev fwd$RCV netns $NS_RCV up Better create the pair right in the namespaces, so no fwd1/fwd3 ever appears in init_net: ip -n $NS_DST link add name fwd$DST type veth peer name fwd$RCV netns $NS_RCV ip -n $NS_DST link set dev fwd$DST up ip -n $NS_RCV link set dev fwd$RCV up All fixed in v2. -- Best regards, Konstantin Khorenko, Virtuozzo Linux Kernel Team _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel