Re: kern/49829: point2point network interfaces cannot receive packets

[Takahiro HAYASHI <t.hash425%gmail.com@localhost>]

pppoe(4) also affected, suggested by Robert Swindells.

On -current kernel:

# ifconfig pppoe0 create up
# ifconfig pppoe0
pppoe0: flags=8851<UP,POINTOPOINT,RUNNING,SIMPLEX,MULTICAST> mtu 1492
        inet6 fe80::216:3eff:fe00:f2%pppoe0 ->  prefixlen 64 scopeid 0x3
# netstat -nr
Routing tables

Internet6:
Destination                             Gateway                        Flags       Use    Mtu Interface
fe80::%pppoe0/64                        fe80::216:3eff:fe00:f2         UC            0      -  pppoe0
fe80::216:3eff:fe00:f2                  fe80::216:3eff:fe00:f2         UHl           0      -  pppoe0
ff01:3::/32                             fe80::216:3eff:fe00:f2         UC            0      -  pppoe0
ff02::%pppoe0/32                        fe80::216:3eff:fe00:f2         UC            0      -  pppoe0
# ping6 -n fe80::216:3eff:fe00:f2%pppoe0
PING6(56=40+8+8 bytes) fe80::216:3eff:fe00:f2%pppoe0 --> fe80::216:3eff:fe00:f2%pppoe0
^C
--- fe80::216:3eff:fe00:f2%pppoe0 ping6 statistics ---
3 packets transmitted, 0 packets received, 100.0% packet loss
#


On netbsd-7 kernel:

# ifconfig pppoe0 create up
# ifconfig pppoe0
pppoe0: flags=8851<UP,POINTOPOINT,RUNNING,SIMPLEX,MULTICAST> mtu 1492
        inet6 fe80::216:3eff:fe00:f2%pppoe0 ->  prefixlen 64 scopeid 0x3
# netstat -nr
Routing tables

Internet6:
Destination                        Gateway                        Flags    Refs      Use    Mtu Interface
fe80::%pppoe0/64                   link#3                         UC          -        0      -L pppoe0
fe80::216:3eff:fe00:f2             link#3                         UHL         -        0      -L lo0
ff01:3::/32                        link#3                         UC          -        0      -L pppoe0
ff02::%pppoe0/32                   link#3                         UC          -        0      -L pppoe0
# ping6 -n fe80::216:3eff:fe00:f2%pppoe0
PING6(56=40+8+8 bytes) fe80::216:3eff:fe00:f2%pppoe0 --> fe80::216:3eff:fe00:f2%pppoe0
16 bytes from fe80::216:3eff:fe00:f2%pppoe0, icmp_seq=0 hlim=64 time=10.642 ms
16 bytes from fe80::216:3eff:fe00:f2%pppoe0, icmp_seq=1 hlim=64 time=0.059 ms
16 bytes from fe80::216:3eff:fe00:f2%pppoe0, icmp_seq=2 hlim=64 time=0.045 ms
^C


--
t-hash