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selftests/net: ensure mptcp is enabled in netns

Some distributions may not enable MPTCP by default. All other MPTCP tests
source mptcp_lib.sh to ensure MPTCP is enabled before testing. However,
the ip_local_port_range test is the only one that does not include this
step.

Let's also ensure MPTCP is enabled in netns for ip_local_port_range so
that it passes on all distributions.

Suggested-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250224094013.13159-1-liuhangbin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

authored by

Hangbin Liu and committed by
Jakub Kicinski 0f588040 fc916719

+3 -1
+3 -1
tools/testing/selftests/net/ip_local_port_range.sh
··· 2 2 # SPDX-License-Identifier: GPL-2.0 3 3 4 4 ./in_netns.sh \ 5 - sh -c 'sysctl -q -w net.ipv4.ip_local_port_range="40000 49999" && ./ip_local_port_range' 5 + sh -c 'sysctl -q -w net.mptcp.enabled=1 && \ 6 + sysctl -q -w net.ipv4.ip_local_port_range="40000 49999" && \ 7 + ./ip_local_port_range'