net/ipv6/exthdrs.c:1242: warning: No description found for return value of 'ipv6_renew_options'
net/ipv6/exthdrs.c:1330: warning: No description found for return value of 'fl6_update_dst'
net/ipv6/exthdrs.c:1237: warning: No description found for return value of 'ipv6_renew_options'
net/ipv6/exthdrs.c:1325: warning: No description found for return value of 'fl6_update_dst'