On Sat, Jul 22, 2017 at 02:05:27PM -0000, Christian Weisgerber wrote:
> On 2017-07-22, Florian Obser <[email protected]> wrote:
>
> > reenabling debug output on the ramdisk I see this:
> >
> > engine_dispatch_frontend: IMSG_PROPOSAL_ACK: 1 - 25467
> > configure_dfr: 1
> > engine_dispatch_frontend: IMSG_PROPOSAL_ACK: 2 - 25467
> > configure_address: 1
> > engine_dispatch_frontend: IMSG_PROPOSAL_ACK: 3 - 25467
> > configure_address: 1
> > configure_interface: vio0
> > configure_interface: vio0
> > fatal in main: SIOCAIFADDR_IN6: File exists
> > # RTM_NEWADDR: vio0[1]
> > RTM_NEWADDR: vio0[1]
> > RTM_DELADDR: vio0[1]
> > engine exiting
> > fatal in engine: msgbuf_write: Broken pipe
> >
> > Maybe you can only have one v6 address on the ramdisk?
>
> Well, I can manually configure additional addresses:
>
> ------------------->
> # ifconfig egress
> em0: flags=208843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,AUTOCONF6> mtu 1500
> lladdr 00:0d:b9:41:06:a4
> llprio 3
> groups: netboot egress
> media: Ethernet autoselect (1000baseT full-duplex,rxpause,txpause)
> status: active
> inet 172.16.0.2 netmask 0xffffff00 broadcast 172.16.0.255
> inet6 fe80::20d:b9ff:fe41:6a4%em0 prefixlen 64 scopeid 0x1
> inet6 fddd:28ee:243:0:384d:91e7:fefc:b697 prefixlen 64 autoconf
> autoconfprivacy pltime 2171 vltime 520983
> inet6 fddd:28ee:243::2 prefixlen 64
> inet6 2003:e5:cbc0:a01::2 prefixlen 64
> <-------------------
>
This is a problem with the kernel routing table not being mpatch
capable, you can see this with v4, too:
# ifconfig vio0
vio0:
flags=248843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,INET6_NOPRIVACY,AUTOCONF6>
mtu 1500
lladdr 52:54:00:c7:09:1b
llprio 3
groups: egress
media: Ethernet autoselect
status: active
inet 192.168.178.178 netmask 0xffffff00 broadcast 192.168.178.255
inet6 fe80::5054:ff:fec7:91b%vio0 prefixlen 64 scopeid 0x1
# route -n show -inet
Routing tables
Internet:
Destination Gateway Flags Refs Use Mtu Prio Iface
default 192.168.178.1 UGS 0 4 - 8 vio0
127/8 127.0.0.1 UGRS 0 0 32768 8 lo0
127.0.0.1 127.0.0.1 UHhPl 1 2 32768 1 lo0
192.168.178/24 192.168.178.178 UCPn 1 0 - 4 vio0
192.168.178.1 54:67:51:de:e7:ce UHLchP 1 2 - 3 vio0
192.168.178.178 52:54:00:c7:09:1b UHLPl 0 16 - 1 vio0
192.168.178.255 192.168.178.178 UHPb 0 0 - 1 vio0
# ifconfig vio0 inet alias 192.168.178.179/24
ifconfig: SIOCAIFADDR: File exists
# ifconfig vio0
vio0:
flags=248843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,INET6_NOPRIVACY,AUTOCONF6>
mtu 1500
lladdr 52:54:00:c7:09:1b
llprio 3
groups: egress
media: Ethernet autoselect
status: active
inet 192.168.178.178 netmask 0xffffff00 broadcast 192.168.178.255
inet6 fe80::5054:ff:fec7:91b%vio0 prefixlen 64 scopeid 0x1
# route -n show -inet
Routing tables
Internet:
Destination Gateway Flags Refs Use Mtu Prio Iface
127/8 127.0.0.1 UGRS 0 0 32768 8 lo0
127.0.0.1 127.0.0.1 UHhPl 1 2 32768 1 lo0
192.168.178.178 52:54:00:c7:09:1b UHLPl 0 16 - 1 vio0
note how we lost a bunch of routes, including 192.168.178.0/24
now you can add 192.168.178.179/24:
# ifconfig vio0 inet alias 192.168.178.179/24
# route -n show -inet
Routing tables
Internet:
Destination Gateway Flags Refs Use Mtu Prio Iface
127/8 127.0.0.1 UGRS 0 0 32768 8 lo0
127.0.0.1 127.0.0.1 UHhPl 1 2 32768 1 lo0
192.168.178/24 192.168.178.179 UCPn 1 0 - 4 vio0
192.168.178.178 52:54:00:c7:09:1b UHLPl 0 16 - 1 vio0
192.168.178.179 52:54:00:c7:09:1b UHLPl 0 1 - 1 vio0
192.168.178.252 08:62:66:8b:84:20 UHLcP 0 1 - 3 vio0
192.168.178.255 192.168.178.179 UHPb 0 0 - 1 vio0
# ifconfig vio0
vio0:
flags=248843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,INET6_NOPRIVACY,AUTOCONF6>
mtu 1500
lladdr 52:54:00:c7:09:1b
llprio 3
groups: egress
media: Ethernet autoselect
status: active
inet 192.168.178.178 netmask 0xffffff00 broadcast 192.168.178.255
inet6 fe80::5054:ff:fec7:91b%vio0 prefixlen 64 scopeid 0x1
inet 192.168.178.179 netmask 0xffffff00 broadcast 192.168.178.255
------------------------------------------------------------------------
here is the same thing for IPv6:
# ifconfig vio0 inet6 2001:db8::1/64
# route -n show -inet6
Routing tables
Internet6:
Destination Gateway Flags Refs
Use Mtu Prio Iface
::1 ::1 UHPl 0
0 32768 1 lo0
2001:db8::/64 2001:db8::1 UCPn 0
0 - 4 vio0
2001:db8::1 52:54:00:c7:09:1b UHLPl 0
0 - 1 vio0
fe80::%vio0/64 fe80::5054:ff:fec7:91b%vio0 UCPn 0
0 - 4 vio0
fe80::5054:ff:fec7:91b%vio0 52:54:00:c7:09:1b UHLPl 0
0 - 1 vio0
fe80::1%lo0 fe80::1%lo0 UHPl 0
0 32768 1 lo0
ff01::%vio0/32 fe80::5054:ff:fec7:91b%vio0 Um 0
1 - 4 vio0
ff01::%lo0/32 ::1 Um 0
1 32768 4 lo0
ff02::%vio0/32 fe80::5054:ff:fec7:91b%vio0 Um 0
1 - 4 vio0
ff02::%lo0/32 ::1 Um 0
1 32768 4 lo0
# ifconfig vio0
vio0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
lladdr 52:54:00:c7:09:1b
llprio 3
groups: egress
media: Ethernet autoselect
status: active
inet 192.168.178.178 netmask 0xffffff00 broadcast 192.168.178.255
inet6 fe80::5054:ff:fec7:91b%vio0 prefixlen 64 scopeid 0x1
inet6 2001:db8::1 prefixlen 64
# ifconfig vio0 inet6 2001:db8::2/64
ifconfig: SIOCAIFADDR: File exists
# route -n show -inet6
Routing tables
Internet6:
Destination Gateway Flags Refs
Use Mtu Prio Iface
::1 ::1 UHPl 0
0 32768 1 lo0
2001:db8::1 52:54:00:c7:09:1b UHLPl 0
0 - 1 vio0
fe80::%vio0/64 fe80::5054:ff:fec7:91b%vio0 UCPn 0
0 - 4 vio0
fe80::5054:ff:fec7:91b%vio0 52:54:00:c7:09:1b UHLPl 0
0 - 1 vio0
fe80::1%lo0 fe80::1%lo0 UHPl 0
0 32768 1 lo0
ff01::%vio0/32 fe80::5054:ff:fec7:91b%vio0 Um 0
2 - 4 vio0
ff01::%lo0/32 ::1 Um 0
1 32768 4 lo0
ff02::%vio0/32 fe80::5054:ff:fec7:91b%vio0 Um 0
2 - 4 vio0
ff02::%lo0/32 ::1 Um 0
1 32768 4 lo0
# ifconfig vio0
vio0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
lladdr 52:54:00:c7:09:1b
llprio 3
groups: egress
media: Ethernet autoselect
status: active
inet 192.168.178.178 netmask 0xffffff00 broadcast 192.168.178.255
inet6 fe80::5054:ff:fec7:91b%vio0 prefixlen 64 scopeid 0x1
inet6 2001:db8::1 prefixlen 64
# ifconfig vio0 inet6 2001:db8::2/64
# route -n show -inet6
Routing tables
Internet6:
Destination Gateway Flags Refs
Use Mtu Prio Iface
::1 ::1 UHPl 0
0 32768 1 lo0
2001:db8::/64 2001:db8::2 UCPn 0
0 - 4 vio0
2001:db8::1 52:54:00:c7:09:1b UHLPl 0
0 - 1 vio0
2001:db8::2 52:54:00:c7:09:1b UHLPl 0
0 - 1 vio0
fe80::%vio0/64 fe80::5054:ff:fec7:91b%vio0 UCPn 0
0 - 4 vio0
fe80::5054:ff:fec7:91b%vio0 52:54:00:c7:09:1b UHLPl 0
0 - 1 vio0
fe80::1%lo0 fe80::1%lo0 UHPl 0
0 32768 1 lo0
ff01::%vio0/32 fe80::5054:ff:fec7:91b%vio0 Um 0
3 - 4 vio0
ff01::%lo0/32 ::1 Um 0
1 32768 4 lo0
ff02::%vio0/32 fe80::5054:ff:fec7:91b%vio0 Um 0
3 - 4 vio0
ff02::%lo0/32 ::1 Um 0
1 32768 4 lo0
# ifconfig vio0
vio0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
lladdr 52:54:00:c7:09:1b
llprio 3
groups: egress
media: Ethernet autoselect
status: active
inet 192.168.178.178 netmask 0xffffff00 broadcast 192.168.178.255
inet6 fe80::5054:ff:fec7:91b%vio0 prefixlen 64 scopeid 0x1
inet6 2001:db8::1 prefixlen 64
inet6 2001:db8::2 prefixlen 64
As a work around you could put in inet6 -autoconfprivacy into the
hostname.if since the privacy address is in the same /64
Btw. with kernel based slaac this used to work since the
kernel didn't go through the ioctl path but just fiddled directly with
the interface and skipped rt_ifa_add() which is failing here.
> And the corresponding /64s show up in the routing table, too.
>
> However, I can't send packets beyond the local segment. tcpdump
> on the gateway shows that it receives a steady stream of neighbor
> solicitations for its advertised default router address. The replies
> don't seem to have any effect.
I haven't figured out what's going on here. If I delete the default
route and set the exact same one with route(8)it works. I suspect
another mpath issue, since that seems to be the main difference
between bsd.rd and bsd.
>
> --
> Christian "naddy" Weisgerber [email protected]
>
--
I'm not entirely sure you are real.
