On my box acting as a router I have two NIC eth0 is the onboard NIC (marvell 1Gbit) eth1 is the additional 10Mbit NIC (realtek 8029) for modem connection. Sometimes upon booting I cannot connect to the modem and also pinging it is impossible, I get an ureachabale host. I reboot the machine and it works... I made a short investigation and when not working /sbin/ifconfig eth0 Link encap:Ethernet HWaddr 52:54:05:E5:82:46 inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::5054:5ff:fee5:8246/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:242 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:18577 (18.1 KiB) Interrupt:19 Base address:0xec00 eth1 Link encap:Ethernet HWaddr 00:11:D8:BF:9F:05 inet addr:192.168.254.1 Bcast:192.168.254.255 Mask:255.255.255.0 inet6 addr: fe80::211:d8ff:febf:9f05/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:61 errors:0 dropped:0 overruns:0 frame:0 TX packets:129 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:5734 (5.5 KiB) TX bytes:12325 (12.0 KiB) Interrupt:20 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:3854 errors:0 dropped:0 overruns:0 frame:0 TX packets:3854 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:5355251 (5.1 MiB) TX bytes:5355251 (5.1 MiB) when working: /sbin/ifconfig eth0 Link encap:Ethernet HWaddr 00:11:D8:BF:9F:05 inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::211:d8ff:febf:9f05/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:10 errors:0 dropped:0 overruns:0 frame:0 TX packets:64 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1192 (1.1 KiB) TX bytes:7983 (7.7 KiB) Interrupt:19 eth1 Link encap:Ethernet HWaddr 52:54:05:E5:82:46 inet addr:192.168.254.1 Bcast:192.168.254.255 Mask:255.255.255.0 inet6 addr: fe80::5054:5ff:fee5:8246/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:348 errors:0 dropped:0 overruns:0 frame:0 TX packets:401 errors:0 dropped:0 overruns:0 carrier:0 collisions:1 txqueuelen:1000 RX bytes:37595 (36.7 KiB) TX bytes:39948 (39.0 KiB) Interrupt:20 Base address:0xec00 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:2575 errors:0 dropped:0 overruns:0 frame:0 TX packets:2575 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:5500220 (5.2 MiB) TX bytes:5500220 (5.2 MiB) ppp0 Link encap:Point-to-Point Protocol inet addr:87.8.156.42 P-t-P:192.168.100.1 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1 RX packets:338 errors:0 dropped:0 overruns:0 frame:0 TX packets:332 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:3 RX bytes:29436 (28.7 KiB) TX bytes:24734 (24.1 KiB) I see that HWadrr and inet6 address are reversed.. what does it mean???? help please -- Antonio Montagnani Skype : antoniomontag