Syslog errors

I see the following errors in the syslog all the time.

Leopard 10.5.3 Mac MIni PPC - all patches current.
Airport Extreme Base station 7.3.1
NAT box not checked in AEBS NAT screen
Connect to the internet via Verizon DSL, PPPoE, DCHP from Verizon.
Thu Jun 19 17:21:26 tommac mDNSResponder[21] <Error>: NAT gateway 192.168.1.1 rebooted
Thu Jun 19 17:21:29 tommac mDNSResponder[21] <Error>: Failed to obtain NAT port mapping 0080A41C from router 192.168.1.1 external address 151.199.19.28 internal port 4500 error 0
Thu Jun 19 17:21:29 tommac mDNSResponder[21] <Error>: Failed to obtain NAT port mapping 0004A4C4 from router 192.168.1.1 external address 151.199.19.28 internal port 5353 error 0
Thu Jun 19 17:21:35 tommac [0x0-0x66f66f].com.apple.airport.airportutility[26651] <Notice>: WirelessAttach: getInterfaceWithName failed
Thu Jun 19 17:21:35 tommac [0x0-0x66f66f].com.apple.airport.airportutility[26651] <Notice>: WirelessAttach: getInterfaceWithName failed

Firewall is on Set Access (option 3). I have allowed the following:
AFP
Printer Sharing
Screen Sharing
Airport Utility
Safari
iPhoto
ddnswriteconfig

I can use the web, VPN etc with no problems.

I have a new MB with the same except it is an Intel MAC with all the same setting, patch levels.

Any help would be appreciated.

Thank you