net/ipv4/icmp.c:234: warning: No description found for return value of 'icmp_global_allow' net/ipv6/ip6_output.c:1236: warning: No description found for return value of 'ip6_dst_lookup' net/ipv6/ip6_output.c:1256: warning: No description found for return value of 'ip6_dst_lookup_flow' net/ipv6/ip6_output.c:1291: warning: No description found for return value of 'ip6_sk_dst_lookup_flow' net/ipv4/icmp.c:234: warning: No description found for return value of 'icmp_global_allow' net/ipv6/ip6_output.c:1236: warning: No description found for return value of 'ip6_dst_lookup' net/ipv6/ip6_output.c:1256: warning: No description found for return value of 'ip6_dst_lookup_flow' net/ipv6/ip6_output.c:1291: warning: No description found for return value of 'ip6_sk_dst_lookup_flow'