net:unicast_extensions.sh complains about missing lib.sh

[Po-Hsu Lin]

Issue found on Mantic 6.5.0-44.44 in cycle 2024.06.10

 Running 'make run_tests -C net TEST_PROGS=unicast_extensions.sh TEST_GEN_PROGS='' TEST_CUSTOM_PROGS='''
 make: Entering directory '/home/ubuntu/autotest/client/tmp/ubuntu_kselftests_net/src/linux/tools/testing/selftests/net'
 TAP version 13
 1..1
 # timeout set to 0
 # selftests: net: unicast_extensions.sh
 # ./unicast_extensions.sh: line 31: lib.sh: No such file or directory
 # ###########################################################################
 # Unicast address extensions tests (behavior of reserved IPv4 addresses)
 # ###########################################################################
 # TEST: assign and ping within 240/4 (1 of 2) (is allowed) [FAIL]
 # TEST: assign and ping within 240/4 (2 of 2) (is allowed) [FAIL]
 # TEST: assign and ping within 0/8 (1 of 2) (is allowed) [FAIL]
 # TEST: assign and ping within 0/8 (2 of 2) (is allowed) [FAIL]
 # TEST: assign and ping inside 255.255/16 (is allowed) [FAIL]
 # TEST: assign and ping inside 255.255.255/24 (is allowed) [FAIL]
 # TEST: route between 240.5.6/24 and 255.1.2/24 (is allowed) [FAIL]
 # TEST: route between 0.200/16 and 245.99/16 (is allowed) [FAIL]
 # TEST: assign and ping lowest address (/24) [FAIL]
 # TEST: assign and ping lowest address (/26) [FAIL]
 # TEST: routing using lowest address [FAIL]
 # TEST: assigning 0.0.0.0 (is forbidden) [ OK ]
 # TEST: assigning 255.255.255.255 (is forbidden) [ OK ]
 # TEST: assign and ping inside 127/8 (is forbidden) [ OK ]
 # TEST: assign and ping class D address (is forbidden) [ OK ]
 # TEST: routing using class D (is forbidden) [ OK ]
 # TEST: routing using 127/8 (is forbidden) [ OK ]
 not ok 1 selftests: net: unicast_extensions.sh # exit=1
 make: Leaving directory '/home/ubuntu/autotest/client/tmp/ubuntu_kselftests_net/src/linux/tools/testing/selftests/net'

This is because of the stable update bug 2059991 pulls in commit 0f4765d0b4 "selftests/net: convert unicast_extensions.sh to run it in unique name space", which adds a dependency of a share library "lib.sh". And we don't have that commit for adding lib.sh to our kernel.

Since this will be the last cycle of Mantic kernel, we will leave it as-is.

[Po-Hsu Lin (cypressyew)]

Fix sent to stable 6.6
https://<email address hidden>/T/#t