> -----Original Message----- > From: Alexander Dalloz [mailto:alexander.dalloz@xxxxxxxxxxxxxxxx] > Sent: Friday, May 07, 2004 6:11 PM > To: For users of Fedora Core releases > Subject: Re: Multiple IP-addresses on one interface > > > Am Fr, den 07.05.2004 schrieb Ola Thoresen um 11:10: > > > What is the _right_ way to set multiple ip addresses on a single > > interface. > > > > I know I could either use ifcfg-eth0:0, ifcfg-eth0:1 and so on but I > > would prefer not to have these "old" aliases. > > Me too. > > > The problem with adding the addresses in rc.local > > (IE /sbin/ip addr add xx.xx.xx.xx/xx dev eth0) is that if > services are > > configured to listen to different addresses they will not > start, unless > > I also add 'service xxxx start' to the bottom of rc.local. > > Correct, not that good. > > > This is not a huge problem, but there should be a better way than > > repeating the whole init after the addresses are set in rc.local. > > > Rgds. > > > > Ola Thoresen > > I had exactly the same problem with my FC1 server too, handling a /27 > net. Unfortunately the system is only prepared for aliased > device range > handling. I asked on the devel list but did not fill in an RFE with > bugzilla. > > So finally I "hacked" it into the system script that sets up the > devices. Though it works proper without any complications it > is far from > best because it is a modification of a system script. > > Go to /etc/sysconfig/network-scripts/ifup line 360. Below > that line add > following: > > if [ ${DEVICE} = "eth0" ]; then > for i in `seq 101 126`; do > ip addr add 128.21.220.$i/27 brd 128.21.220.127 dev eth0 > label eth0 > done > fi > > (that is a 5 liner; the line starting with "ip addr" ends with "label > eth0" is single, probably wrapped in mail) > > That will add IPs 128.21.220.101 - 128.21.220.126 to the eth0 device, > given that all IPs are in the same net (have same netmask). > You can list > assigned IPs using "ip addr list". "ifconfig" is limited and will not > show you the additional IPs. Interesting configuration. Stupid Q: Why are there up to 25 address aliased to 1 single NIC? Are you using it as a router or something? Virtual IP based (web)Servers?
