check_dhcp on vlan interface

[Marc Boisis-Delavaud]

Hello

My nagios server run on openbsd. I have one physical network  
interface (pcn0) with no ip.
Upon pcn0, I have 5 vlan interfaces .

This is an extract of ifconfig
pcn0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
         lladdr 00:50:56:a7:5c:4a
         media: Ethernet autoselect (autoselect)
         inet6 fe80::250:56ff:fea7:5c4a%pcn0 prefixlen 64 scopeid 0x1

vlan1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1496
         lladdr 00:50:56:a7:5c:4a
         vlan: 1 priority: 0 parent interface: pcn0
         groups: vlan
         inet6 fe80::250:56ff:fea7:5c4a%vlan1 prefixlen 64 scopeid 0x6
         inet 10.1.11.156 netmask 0xffff0000 broadcast 10.1.255.255
vlan10: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1496
         lladdr 00:50:56:a7:5c:4a
         vlan: 10 priority: 0 parent interface: pcn0
         groups: vlan egress
         inet6 fe80::250:56ff:fea7:5c4a%vlan10 prefixlen 64 scopeid 0x7
         inet 10.10.10.25 netmask 0xffff0000 broadcast 10.10.255.255
...

I try to check a dhcp server on vlan 1, my check command is
check_dhcp -s 10.1.0.1 -i vlan1

When I tcpdump , the packet go out from vlan 10 !

Is it a bug or check_dhcp does'nt work with vlan interface ?

Marc




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