Hello, I am trying to add IPv6 support for pppd(8) (IPv6CP) and I encounter a blocker when adding a default IPv6 route to PPP peer.
Feb 23 17:26:45 rt-01 pppd[64071]: Couldn't add IPv6 default route: Network is unreachable Adding the default route from route(8) works when the connection is established. >From what I see with route(8), it sends the same route message as pppd(8). >From `route -v add -inet6 default fe80::ca4c:75ff:fe16:9f00%ppp0` : ``` RTM_ADD: Add Route: len 168, priority 0, table 0, if# 0, pid: 0, seq 1, errno 0 flags:<UP,GATEWAY> fmask: use: 0 mtu: 0 expire: 0 locks: inits: sockaddrs: <DST,GATEWAY,NETMASK> :: fe80::ca4c:75ff:fe16:9f00%ppp0 default ``` >From pppd(8) : ``` got message of size 168 on Fri Feb 23 17:26:45 2024 RTM_ADD: Add Route: len 168, priority 0, table 0, if# 0, pid: 64071, seq 1, errno 51 flags:<UP,GATEWAY> fmask: use: 0 mtu: 0 expire: 0 locks: inits: sockaddrs: <DST,GATEWAY,NETMASK> :: fe80::ca4c:75ff:fe16:9f00%ppp0 default ``` However `route monitor -inet6` shows that the message is different when using route(8) : ``` got message of size 288 on Fri Feb 23 17:26:22 2024 RTM_ADD: Add Route: len 288, priority 56, table 0, if# 7, name ppp0, pid: 53003, seq 1, errno 0 flags:<UP,GATEWAY,DONE> fmask: use: 0 mtu: 0 expire: 0 locks: inits: sockaddrs: <DST,GATEWAY,NETMASK,IFP,IFA,BRD> :: fe80::ca4c:75ff:fe16:9f00%ppp0 :: ppp0 fe80::d925:b01f:db25:b020%ppp0 fe80::ca4c:75ff:fe16:9f00%ppp0 ``` Should I also send the IFP, IFA and BRD sockaddrs from pppd(8) ? How comes message sent from route(8) have more attributes when received by monitor ? Denis
