* Ralf Hildebrandt <[email protected]>:
> * Ralf Hildebrandt <[email protected]>:
>
> > Attached is a dump (DHCP.dump) made with
> > % tcpdump -i ens192 -vvv -s 1500 '((port 67 or port 68) and (udp[38:4] =
> > 0x001742ef506a))' > DHCP.dump
> > on the KEA server
>
> it seems that the "Server-ID Option 54" -- set to the IP of
> radius-wlan2.charite.de -- is being changed by the router
> (vrf-event-roucbfpav-haus1.charite.de) to it's own IP:
>
> Server-ID Option 54, length 4: radius-wlan2.charite.de
> Server-ID Option 54, length 4: vrf-event-roucbfpav-haus1.charite.de
I performed the same dump (ok, with option -n) with isc-dhcpd. The
client immediately obtained an IP and the dump contains:
[root@radius-wlan2] /var/log# fgrep "Server-ID Option 54," DHCP-isc.dump
Server-ID Option 54, length 4: 10.32.36.35
Server-ID Option 54, length 4: 10.31.192.2
Server-ID Option 54, length 4: 10.32.36.35
So, isc-dhcpd doesn't seem to check the Server-ID Option 54 as strictly.
--
Ralf Hildebrandt Charite Universitätsmedizin Berlin
[email protected] Campus Benjamin Franklin
http://www.charite.de Hindenburgdamm 30, 12203 Berlin
Geschäftsbereich IT, Abt. Netzwerk fon: +49-30-450.570.155
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