linux/tools/testing/selftests/net/ppp
Qingfang Deng 2eb9a81a7f selftests: net: do not detect PPPoX loopback
By default, pppd attempts to detect loopbacks on the underlying
interface using a pseudo-randomly generated magic number and checks if
the same value is received. The seed for the PRNG is a hash of hostname
XOR current time XOR pid, which is likely to collide on NIPA, causing
false positives. Disable magic number generation.

Reported-by: Matthieu Baerts <matttbe@kernel.org>
Fixes: 7af2a94f4d ("selftests: net: add tests for PPPoL2TP")
Signed-off-by: Qingfang Deng <qingfang.deng@linux.dev>
Link: https://patch.msgid.link/20260603061746.23452-1-qingfang.deng@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-05 17:29:40 -07:00
..
config
Makefile
ppp_async.sh
ppp_common.sh
pppoe-server-options selftests: net: do not detect PPPoX loopback 2026-06-05 17:29:40 -07:00
pppoe.sh
pppol2tp.sh selftests: net: add socat syslog for PPPoL2TP 2026-06-02 11:42:48 -07:00