WARNING: please write a help paragraph that fully describes the config symbol
#48: FILE: net/Kconfig:472:
+	config FB_TUNNELS_DEFAULT_ALL
+		bool "In every namespace"
+

WARNING: please write a help paragraph that fully describes the config symbol
#51: FILE: net/Kconfig:475:
+	config FB_TUNNELS_DEFAULT_INITNS
+		bool "Only in the initial namespace"
+

WARNING: please write a help paragraph that fully describes the config symbol
#54: FILE: net/Kconfig:478:
+	config FB_TUNNELS_DEFAULT_NONE
+		bool "Never"

WARNING: line length of 82 exceeds 80 columns
#76: FILE: net/core/sysctl_net_core.c:40:
+int sysctl_fb_tunnels_only_for_init_net __read_mostly = CONFIG_FB_TUNNELS_DEFAULT;

total: 0 errors, 4 warnings, 0 checks, 47 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 214889cd4e34 ("net: add config option for tunnel fallback devs") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE 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, 4 warnings, 0 checks, 47 lines checked