This module matches on IPv6 option headers

--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

--soft
    The header CONTAINS the specified extensions.