router sees my wireless mac addres but I cannot ping it

[gosha]

OpenBSD 4.5 stable.
Hello,
I suddenly don't have wireless connection, but don't know since when, because these days I was connecting through cable.
Well, this is ifconfig:

iwn0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	lladdr my mac address
	priority: 0
	groups: wlan
	media: IEEE802.11 autoselect (OFDM24 mode 11g)
	status: active
	ieee80211: nwid mylan chan 6 bssid router mac address 239dB wpapsk <not displayed> wpaprotos wpa1,wpa2 wpaakms psk wpaciphers tkip,ccmp wpagroupcipher tkip
	inet6 fe80::222:faff:fef5:62fa%iwn0 prefixlen 64 scopeid 0x2
	inet 192.168.1.102 netmask 0xffffff00 broadcast 192.168.1.255

my router sees my mac address but does not seem to give a ip address, it gives it if I connect through cable though.
Anyway, I cannot ping:

$ ping 192.168.1.1 
PING 192.168.1.1 (192.168.1.1): 56 data bytes
	ping: sendto: Host is down
ping: wrote 192.168.1.1 64 chars, ret=-1
ping: sendto: Host is down
ping: wrote 192.168.1.1 64 chars, ret=-1
ping: sendto: Host is down
ping: wrote 192.168.1.1 64 chars, ret=-1
ping: sendto: Host is down
ping: wrote 192.168.1.1 64 chars, ret=-1
ping: sendto: Host is down
ping: wrote 192.168.1.1 64 chars, ret=-1

I did not change anything from the last time I used it, what could it be?
I've tried turning off router and modem and rebooting. Nothing.