Joachim kindly merged the IPv6 support in
https://github.com/troglobit/mtools/pull/2, so we can just use his
version now. A few more fixes subsequently came in for IPv6, so even
better.

Check that the deployed mtools version is 3.0 or above. Note that the
version check breaks compatibility with my fork where I didn't bump the
version, but I assume that won't be a problem.

Signed-off-by: Vladimir Oltean <[email protected]>
---
 tools/testing/selftests/net/forwarding/lib.sh | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/net/forwarding/lib.sh 
b/tools/testing/selftests/net/forwarding/lib.sh
index 4fe28ab5d8b9..aa925c0954a5 100644
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -309,6 +309,21 @@ require_command()
        fi
 }
 
+# IPv6 support was added in v3.0
+check_mtools_version()
+{
+       local version="$(msend -v)"
+       local major
+
+       version=${version##msend version }
+       major=$(echo $version | cut -d. -f1)
+
+       if [ $major -lt 3 ]; then
+               echo "SKIP: expected mtools version 3.0, got $version"
+               exit $ksft_skip
+       fi
+}
+
 if [[ "$REQUIRE_JQ" = "yes" ]]; then
        require_command jq
 fi
@@ -316,10 +331,10 @@ if [[ "$REQUIRE_MZ" = "yes" ]]; then
        require_command $MZ
 fi
 if [[ "$REQUIRE_MTOOLS" = "yes" ]]; then
-       # https://github.com/vladimiroltean/mtools/
-       # patched for IPv6 support
+       # https://github.com/troglobit/mtools
        require_command msend
        require_command mreceive
+       check_mtools_version
 fi
 
 ##############################################################################
-- 
2.34.1


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