WARNING: Missing or malformed SPDX-License-Identifier tag in line 2
#40: FILE: tools/testing/selftests/net/ip6_tunnel.sh:2:
+# Test that IPv4-over-IPv6 tunneling works.

WARNING: line length of 110 exceeds 80 columns
#53: FILE: tools/testing/selftests/net/ip6_tunnel.sh:15:
+  ip -n $ns1 link add link transport1 name tunnel4 type ip6tnl mode ipip6 local 2001:db8::1 remote 2001:db8::2

WARNING: line length of 111 exceeds 80 columns
#56: FILE: tools/testing/selftests/net/ip6_tunnel.sh:18:
+  ip -n $ns1 link add link transport1 name tunnel6 type ip6tnl mode ip6ip6 local 2001:db8::3 remote 2001:db8::4

WARNING: line length of 110 exceeds 80 columns
#65: FILE: tools/testing/selftests/net/ip6_tunnel.sh:27:
+  ip -n $ns2 link add link transport2 name tunnel4 type ip6tnl mode ipip6 local 2001:db8::2 remote 2001:db8::1

WARNING: line length of 111 exceeds 80 columns
#68: FILE: tools/testing/selftests/net/ip6_tunnel.sh:30:
+  ip -n $ns2 link add link transport2 name tunnel6 type ip6tnl mode ip6ip6 local 2001:db8::4 remote 2001:db8::3

total: 0 errors, 5 warnings, 0 checks, 51 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit d0fd1ead91c9 ("selftests/net: add test for IP-in-IPv6 tunneling") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 5 warnings, 0 checks, 51 lines checked