What is NOTRAILERS?

[UnknownOrigin]

Today I decided to mess with static ips. I noticed that when my router's dhcp assigns me the address 192.168.1.102, NOTRAILERS is enabled, and when I use a static ip of 192.168.1.3, NOTRAILERS is disabled. Does anyone know what NOTRAILERS is? Scouring Google results has yielded nothing.

ath0 Link encap:Ethernet HWaddr 00:11:F5:26:97:7A
inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:27547 errors:3394 dropped:0 overruns:0 frame:3394
TX packets:24339 errors:12 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:199
RX bytes:26766413 (25.5 Mb) TX bytes:3370644 (3.2 Mb)
Interrupt:11 Memory:e03c0000-e03d0000

ath0 Link encap:Ethernet HWaddr 00:11:F5:26:97:7A
inet addr:192.168.1.102 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
RX packets:27561 errors:3444 dropped:0 overruns:0 frame:3444
TX packets:24354 errors:12 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:199
RX bytes:26769698 (25.5 Mb) TX bytes:3372352 (3.2 Mb)
Interrupt:11 Memory:e03c0000-e03d0000