Paul Mansfield wrote:
Ugo Bellavance wrote:
Paul Mansfield wrote:
Ugo Bellavance wrote:
The DHCP server on my pfsense seems to be working intermittently,
especialy over WLAN. In the logs, I can see the DHCPDISCOVER, the
DHCPOFFER, but no REQUEST nor ACK. The wireless antenna is working with
do you mean that if you run tcpdump on the pfsense box you see the dhcp
request and response, or are you talking about the client?
I see them in the pfsense logs, so I guess it would be seen in a tcpdump
session as well.
well, that could be a dangerous assumption.
I would recommend trying tcpdump, if nothing else to be sure that the
dhcp response is going out the right interface (use something like
"tcpdump -e -i ethX -l -n -s 1500 port 67 or port 68" - the "-e" dumps
the link-layer, i.e. mac addresses, IIRC).
Funny, I only see Requests... But in the logs I see offers, acks, etc.
I'll double-check my tcpdump settings another time.
# tcpdump -e -i sis0 -n -s 1500 port 67 or port 68
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on sis0, link-type EN10MB (Ethernet), capture size 1500 bytes
20:12:31.443257 00:12:f0:9a:4b:1e > ff:ff:ff:ff:ff:ff, ethertype IPv4
(0x0800), length 362: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP,
Request from 00:12:f0:9a:4b:1e, length: 320
20:12:40.364094 00:12:f0:9a:4b:1e > ff:ff:ff:ff:ff:ff, ethertype IPv4
(0x0800), length 342: 192.168.2.120.68 > 255.255.255.255.67: BOOTP/DHCP,
Request from 00:12:f0:9a:4b:1e, length: 300
20:12:43.293344 00:12:f0:9a:4b:1e > ff:ff:ff:ff:ff:ff, ethertype IPv4
(0x0800), length 342: 192.168.2.120.68 > 255.255.255.255.67: BOOTP/DHCP,
Request from 00:12:f0:9a:4b:1e, length: 300
22:27:19.736948 00:15:e9:b7:8f:6a > ff:ff:ff:ff:ff:ff, ethertype IPv4
(0x0800), length 362: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP,
Request from 00:15:e9:b7:8f:6a, length: 320
22:28:23.562040 00:15:e9:b7:8f:6a > ff:ff:ff:ff:ff:ff, ethertype IPv4
(0x0800), length 342: 192.168.2.117.68 > 255.255.255.255.67: BOOTP/DHCP,
Request from 00:15:e9:b7:8f:6a, length: 300
22:28:24.566501 00:15:e9:b7:8f:6a > ff:ff:ff:ff:ff:ff, ethertype IPv4
(0x0800), length 342: 192.168.2.117.68 > 255.255.255.255.67: BOOTP/DHCP,
Request from 00:15:e9:b7:8f:6a, length: 300
one thing occurs to me is that if you're suffering from network
congestion then possibly the dhcp response is being lost.
I doubt so... only 3 wireless clients.
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