diff -drupN a/include/net/transp_v6.h b/include/net/transp_v6.h
--- a/include/net/transp_v6.h	2018-08-06 17:23:04.000000000 +0300
+++ b/include/net/transp_v6.h	2022-06-12 05:28:14.000000000 +0300
@@ -19,8 +19,6 @@ int ipv6_frag_init(void);
 void ipv6_frag_exit(void);
 
 /* transport protocols */
-int pingv6_init(void);
-void pingv6_exit(void);
 int rawv6_init(void);
 void rawv6_exit(void);
 int udpv6_init(void);