ù°·Î IP Alias ¸ðµâÀ» ¶ç¿ö¾ß ÇÑ´Ù. (¹Ì¸® ¸ðµâÀ» Ä¿³Î·Î ÄÄÆÄÀÏ ÇßÀ¸¸é, ÀÌ ´Ü°è¸¦ ¶Ù¾î³Ñ¾îµµ µÈ´Ù.)
/sbin/insmod /lib/modules/`uname -r`/ipv4/ip_alias.o
µÎ¹ø°, ·çÇÁ¹éÀ» ¼³Á¤ÇÑÈÄ eth0°ú ¸ðµç ´Ù¸¥ IP³Ñ¹öµéÀº eth0 ÀÎÅÍÆäÀ̽º¸¦ À§Çؼ ÁÖ IP³Ñ¹ö·Î ½ÃÀ۵Ǿî¾ß ÇÑ´Ù.
/sbin/ifconfig lo 127.0.0.1
/sbin/ifconfig eth0 up
/sbin/ifconfig eth0 172.16.3.1
/sbin/ifconfig eth0:0 172.16.3.10
/sbin/ifconfig eth0:1 172.16.3.100
172.16.3.1 Àº ÁÖIP³Ñ¹öÀÌ°í .10°ú .100Àº AliasµÈ IP³Ñ¹öÀÌ´Ù. ´Ù¸¥ ¾ÆÀÌÇÇ ³Ñ¹ö¿¡ ´ëÇؼ eth0:x¿¡ 0,1,2...nÀ» ´ëÀÔÇÏ´Â °ÍÀÌ ¹æ¹ýÀÌ´Ù. ÁÖ IP ³Ñ¹ö´Â ¾Ë¸®¾Æ½ºµÉ ÇÊ¿ä°¡ ¾ø´Ù.
¼Â°·Î ¶ó¿ìÆ® Á¤º¸¸¦ ¼³Á¤ÇÑ´Ù. ·çÇÁ¹éÀ» ù°·Î ¶ó¿ìÆ®½ÃÅ°°í net À» ±× ´ÙÀ½À¸·Î ±×¸®°í ¸¶Áö¸·À¸·Î ±âº» ¾ÆÀÌÇÇ(¿ø·¡ ¹è´ç¹Þ¾Ò´ø)·Î ½ÃÀ۵Ǵ ¾ÆÀÌÇÇ ³Ñ¹öµéÀ» ¼Â¾÷ÇÑ´Ù.
/sbin/route add -net 127.0.0.0
/sbin/route add -net 172.16.3.0 dev eth0
/sbin/route add -host 172.16.3.1 dev eth0
/sbin/route add -host 172.16.3.10 dev eth0:0
/sbin/route add -host 172.16.3.100 dev eth0:1
/sbin/route add default gw 172.16.3.200
ÀÌ°Ô ´ÙÀÌ´Ù.
À§ÀÇ ¿¹¿¡¼ µç ¾ÆÀÌÇdzѹö´Â Private IP³Ñ¹ö(RFC 1918)¸¦ ½ÇÁ¦Àû ¿¹°¡ µÇ´Â ¸ñÀûÀ¸·Î »ç¿ëÇß´Ù. ¿©·¯ºÐÀÇÀÇ ½ÇÁ¦ ¾ÆÀÌÇdzѹö¸¦ ÀÌ°ÍÀ̶û ´ëüÇؼ ½á¶ó.
3°³ÀÇ ¾ÆÀÌÇÇ ³Ñ¹ö¿¡ ´ëÇؼ ¿¹¸¦ µé¾ú´Ù. ÃÖ´ëÄ¡´Â 256À¸·Î /usr/include/linux/net_alias.h¿¡ Á¤ÀǵǾîÀÖ´Ù. »ç½Ç ÇÑÄ«µå¿¡ 256°³ÀÇ IP³Ñ¹ö´Â ¸¹Àº °ÍÀÌ´Ù.
¿©±â¿¡ ³ªÀÇ /sbin/infconfig
ÀÌ º¸¿©ÁÖ´Â °á°ú°¡ ÀÖ´Ù.
lo Link encap:Local Loopback
inet addr:127.0.0.1 Bcast:127.255.255.255 Mask:255.0.0.0
UP BROADCAST LOOPBACK RUNNING MTU:3584 Metric:1
RX packets:5088 errors:0 dropped:0 overruns:0
TX packets:5088 errors:0 dropped:0 overruns:0
eth0 Link encap:10Mbps Ethernet HWaddr 00:8E:B8:83:19:20
inet addr:172.16.3.1 Bcast:172.16.3.255 Mask:255.255.255.0
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:334036 errors:0 dropped:0 overruns:0
TX packets:11605 errors:0 dropped:0 overruns:0
Interrut:7 Base address:0x378
eth0:0 Link encap:10Mbps Ethernet HWaddr 00:8E:B8:83:19:20
inet addr:172.16.3.10 Bcast:172.16.3.255 Mask:255.255.255.0
UP BROADCAST RUNNING MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0
TX packets:0 errors:0 dropped:0 overruns:0
eth0:1 Link encap:10Mbps Ethernet HWaddr 00:8E:B8:83:19:20
inet addr:172.16.3.100 Bcast:172.16.3.255 Mask:255.255.255.0
UP BROADCAST RUNNING MTU:1500 Metric:1
RX packets:1 errors:0 dropped:0 overruns:0
TX packets:0 rrors:0 dropped:0 overruns:0
±×¸®°í /proc/netaliase:
device family address
eth0:0 2 172.16.3.10
eth0:1 2 172.16.3.100
¶Ç /proc/net/alias_types¿¡¼ º¸¿©Áö´Â °ÍÀÌ´Ù.
type name n_attach
2 ip 2
¹°·Ð, /proc/net¿¡ ÀÖ´Â ÀÌ·±°ÍµéÀº ifconfig
¸í·É¿¡ ÀÇÇؼ ¸¸µé¾îÁø °ÍÀÌÁö
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