In 5.4-RELEASE, I just noticed that even when an interface is down (i.e.
"ifconfig vlan7 down"), the link-local route remains active.
According to ifconfig(8), in the section talking about the "down"
subcommand:
This action automatically disables routes using the
interface.
...yet that isn't happening for me.
Here's (hopefully) all the information anyone's going to ask for right now
===hostname.vlan7===
description MBIX_BGP
vlan 7 vlandev trunk0
inet 206.72.208.16/24
inet6 2001:504:26::6:2752:1/64
down
===netstat -rn -f inet===
Routing tables
Internet:
Destination Gateway Flags Refs Use Mtu Prio Iface
default 198.51.75.2 UGS 4 1745 - 8 vlan5
10.0.1/24 link#16 UC 0 0 - 4 vlan6
127/8 127.0.0.1 UGRS 0 0 33144 8 lo0
127.0.0.1 127.0.0.1 UH 0 0 33144 4 lo0
184.70.48.184/29 link#12 C 0 0 - 4 vlan2
192.168.160/24 link#15 UC 1 0 - 4 vlan4
192.168.160.88 00:24:a5:af:25:18 UHLc 0 14 - 4 vlan4
198.51.75/24 link#9 UC 1 0 - 4 vlan5
198.51.75.2 f2:f2:be:d0:0e:67 UHLc 1 0 - 4 vlan5
204.16.160.160/29 link#14 UC 0 0 - 4 vlan207
206.72.208/24 link#17 C 0 0 - 4 vlan7
224/4 127.0.0.1 URS 0 0 33144 8 lo0
**Note 206.72.208/24 route via vlan7 is still present. **
===ping 206.72.208.12 [which is up and alive at the moment]===
PING 206.72.208.12 (206.72.208.12): 56 data bytes
ping: sendto: Network is down
ping: wrote 206.72.208.12 64 chars, ret=-1
===ping 8.8.8.8 [just to prove my default gateway works]===
PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: icmp_seq=0 ttl=48 time=49.026 ms
===ifconfig vlan7===
vlan7: flags=8842<BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
lladdr 00:26:6c:f1:58:b4
description: MBIX_BGP
priority: 0
vlan: 7 parent interface: trunk0
groups: vlan
status: active
inet6 fe80::226:6cff:fef1:58b4%vlan7 prefixlen 64 scopeid 0x11
inet 206.72.208.16 netmask 0xffffff00 broadcast 206.72.208.255
inet6 2001:504:26::6:2752:1 prefixlen 64
**Note distinct lack of "UP" flag. I'm not sure why status=active, nor
precisely what that means.**
Weirder... if I re-display the v4 routes, I now see
206.72.208/24 link#17 C 3 0 - 4 vlan7
206.72.208.1 link#17 HLc 0 1 - 4 vlan7
206.72.208.11 link#17 HLc 0 3 - 4 vlan7
206.72.208.12 link#17 HLc 0 1 - 4 vlan7
That's definitely not supposed to happen on a down'ed interface.
Ah, crap. And arp(8) is showing me "incomplete"s.
So, basically, you can't ever down a vlan(4) interface???
(Yeah, I just tried "ifconfig vlan7 down" and re-tested. Same results.
Ack.)
I want the link down because my layer 1 connection to that network
doesn't exist right now but I don't want to completely remove the
interface configuration.
I must be missing something here...
(I don't have any other multihomed hosts to test this on at the moment.
5.4-RELEASE installed from CD.)
Help!?
--
-Adam Thompson
athom...@athompso.net
