On Solaris 'netstat -rvn' can output lines without device name:
$ netstat -rvn
IRE Table: IPv4
Destination Mask Gateway Device Mxfrg Rtt Ref Flg Out In/Fwd
-------------------- --------------- -------------------- ------ ----- ----- --- --- ----- ------
default 0.0.0.0 XXX.XX.XX.X nge0 1500* 0 1 UG 447732 0
10.45.0.0 255.255.255.0 10.45.0.31 1500* 0 1 UG 13 0
10.45.0.31 255.255.255.255 10.45.0.30 tun0 1500* 0 1 UH 0 0
XXX.XX.0.0 255.255.128.0 XXX.XX.XXX.XXX nge0 1500* 0 1 U 45979 0
192.168.2.0 255.255.255.0 10.45.0.31 1500* 0 1 UG 292 0
192.168.3.0 255.255.255.0 192.168.3.1 nge1 1500* 0 1 U 45551 0
192.168.4.0 255.255.255.0 10.45.0.31 1500* 0 1 UG 0 0
192.168.5.0 255.255.255.0 10.45.0.31 1500* 0 1 UG 0 0
224.0.0.0 240.0.0.0 192.168.3.1 nge1 1500* 0 1 U 0 0
127.0.0.1 255.255.255.255 127.0.0.1 lo0 8232* 0 1 UH 787835 0
When Scapy parses the output it will end up with '1500*' as interface name and raise 'OSError: No such device or address' from get_if_raw_addr() in source:scapy/arch/pcapdnet.py
An easy fix for the problem is to use 'netstat -rvn -f outif:any' in source:scapy/arch/unix.py, to list only routes with devices assigned.
$ netstat -rvn -f outif:any
IRE Table: IPv4
Destination Mask Gateway Device Mxfrg Rtt Ref Flg Out In/Fwd
-------------------- --------------- -------------------- ------ ----- ----- --- --- ----- ------
default 0.0.0.0 XXX.XX.XX.X nge0 1500* 0 1 UG 447732 0
10.45.0.31 255.255.255.255 10.45.0.30 tun0 1500* 0 1 UH 0 0
XXX.XX.0.0 255.255.128.0 XXX.XX.XXX.XXX nge0 1500* 0 1 U 45980 0
192.168.3.0 255.255.255.0 192.168.3.1 nge1 1500* 0 1 U 45553 0
224.0.0.0 240.0.0.0 192.168.3.1 nge1 1500* 0 1 U 0 0
127.0.0.1 255.255.255.255 127.0.0.1 lo0 8232* 0 1 UH 787883 0
