This module matches on IPv6 option headers
.TP
.BI "--header " "[!]" "headers"
Matches the given type of headers.  
Names: hop,dst,route,frag,auth,esp,none,proto
Long Names: hop-by-hop,ipv6-opts,ipv6-route,ipv6-frag,ah,esp,ipv6-nonxt,protocol
Numbers: 0,60,43,44,51,50,59
.TP
.BI "--soft"
The header CONTAINS the specified extensions.