Issues when using OFPActionEncap with type IPv6

[jfermae]

Hi,

I am using lagopus with https://github.com/lagopus/ryu-lagopus-ext for GTP-U tunnels over IPv4 (so traffic IPv4 and IPv6 working over GTP/IPv4) and trying now with GTP/IPv6. However I am having issues whenever I try to use parser.OFPActionEncap(type_ip) with a type IPv6 (using type_ip = (ofproto.OFPHTN_ETHERTYPE << 16) | 0x86dd). It looks like although there is a match , no packet is going out from the switch, it doesn't give any error either.

I was wondering if you know if there is any issue with encap ipv6 or if you know if there is any extra step i am missing that needs to be done with encap ipv6. As for now I was trying to set similar field as with encap ipv4, like addresses and hop limit:

               parser.OFPActionSetField(ipv6_src='1:2::1'),
               parser.OFPActionSetField(ipv6_dst='2:3::3'),
               parser.OFPActionSetNwTtl(nw_ttl=16),

Or maybe you can give some ideas of how to debug and troubleshoot it.

Thanks and regards,