selftests: pmtu: fix init mtu value in description

BugLink: https://bugs.launchpad.net/bugs/1861929
[ Upstream commit 152044775d0b9a9ed9509caed40efcba2677951d ]

There is no a_r3, a_r4 in the testing topology.
It should be b_r1, b_r2. Also b_r1 mtu is 1400 and b_r2 mtu is 1500.

Fixes: e44e428f59e4 ("selftests: pmtu: add basic IPv4 and IPv6 PMTU tests")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/tools/testing/selftests/net/pmtu.sh b/tools/testing/selftests/net/pmtu.sh
index d697815d27855586b64986cb014aa4daf7f35805..71a62e7e35b1c1bdfd78b8c43d14a2547d01c951 100755 (executable)
--- a/tools/testing/selftests/net/pmtu.sh
+++ b/tools/testing/selftests/net/pmtu.sh
@@ -11,9 +11,9 @@
 #      R1 and R2 (also implemented with namespaces), with different MTUs:
 #
 #        segment a_r1    segment b_r1          a_r1: 2000
-#      .--------------R1--------------.        a_r2: 1500
-#      A                               B       a_r3: 2000
-#      '--------------R2--------------'        a_r4: 1400
+#      .--------------R1--------------.        b_r1: 1400
+#      A                               B       a_r2: 2000
+#      '--------------R2--------------'        b_r2: 1500
 #        segment a_r2    segment b_r2
 #
 #      Check that PMTU exceptions with the correct PMTU are created. Then