ipv6_chk_rpl_srh_loop() misses the shortest RPL loop pattern containing two local addresses with a non-local address between them. The check is made before the current local address is counted, so found is 1 rather than greater than 1 when the second local address is reached.
Patch 1 fixes the condition. Patch 2 adds a selftest which verifies that adjacent local addresses are accepted and separated local addresses are rejected. The selftest fails on the unmodified net tree and passes with the fix. Signed-off-by: Mark Amirkan <[email protected]> --- Mark Amirkan (2): ipv6: rpl: fix loop detection for separated local addresses selftests: net: add RPL SRH loop test net/ipv6/addrconf.c | 2 +- tools/testing/selftests/net/Makefile | 1 + tools/testing/selftests/net/rpl_srh_loop.sh | 38 +++++++++++++++++++++++++++++ 3 files changed, 40 insertions(+), 1 deletion(-) --- base-commit: 78445023439506ebd83b86d40b1e428a3b309d4a change-id: 20260911-sympwn-rpl-send-c739b4c864a7 Best regards, -- Mark Amirkan <[email protected]>
