selftests: forwarding: bridge_mdb: Check iproute2 version

The selftest relies on iproute2 changes present in version 6.3, but the
test does not check for it, resulting in error:

 # ./bridge_mdb.sh

 INFO: # Host entries configuration tests
 TEST: Common host entries configuration tests (IPv4)                [FAIL]
         Managed to add IPv4 host entry with a filter mode
 TEST: Common host entries configuration tests (IPv6)                [FAIL]
         Managed to add IPv6 host entry with a filter mode
 TEST: Common host entries configuration tests (L2)                  [FAIL]
         Managed to add L2 host entry with a filter mode

 INFO: # Port group entries configuration tests - (*, G)
 Command "replace" is unknown, try "bridge mdb help".
 [...]

Fix by skipping the test if iproute2 is too old.

Fixes: b6d00da08610 ("selftests: forwarding: Add bridge MDB test")
Reported-by: Mirsad Todorovac <[email protected]>
Closes: https://lore.kernel.org/netdev/[email protected]/
Signed-off-by: Ido Schimmel <[email protected]>
Reviewed-by: Petr Machata <[email protected]>
Tested-by: Mirsad Todorovac <[email protected]>
Reviewed-by: Hangbin Liu <[email protected]>
Acked-by: Nikolay Aleksandrov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

0 files changed, 0 insertions, 0 deletions