Can anyone explain to me why it says NOTRAILERS or what does that mean? My books mention nothing about anything like that and I've never seen my ifconfig say that.

eth0 Link encap:Ethernet HWaddr 00:50:8D:A6:1F:14
inet addr:192.168.0.2 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::250:8dff:fea6:1f14/10 Scope:Link
UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1299 errors:0 dropped:0 overruns:0 frame:0
TX packets:1293 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:838116 (818.4 Kb) TX bytes:220774 (215.5 Kb)
Interrupt:11 Base address:0xe000

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:54 errors:0 dropped:0 overruns:0 frame:0
TX packets:54 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3460 (3.3 Kb) TX bytes:3460 (3.3 Kb)

No one knows? Come on, experienced users.

Never mind. I did it myself.

trailers: Requests the use of a trailer link-level encapsulation when sending messages. If a network interface supports trailers, the system will, when possible, encapsulate outgoing messages in a manner that minimizes the number of memory-memory copy operations performed by the receiver. On networks that support the Address Resolution Protocol (see arp), this flag indicates that the system should request that other systems use trailers when sending to this host. Similarly, trailer encapsulations will be sent to other hosts that have made such requests. Currently used by Internet protocols only.

- trailers: Disables the use of a trailer link-level encapsulation. This is the default.