From: "Ow Mun Heng" <ow.mun.heng@xxxxxxx> > > From: jdow [mailto:jdow@xxxxxxxxxxxxx] > > > > > > Sometime you log in from the company 192.168.0.0 block and you notice > > the WAN link is listed as your address compare the last digits in the > > address. Sometimes they might be mapped 1:1 to each other. Regardless, > > perform a "host" on your 192 address. That will return an address. Is > > that address within the 192.168.0.0 network or is it within the WAN > > network? What do you get when you use "host" on the dotted > > quad address > > you get back and see what happens. > > Okay.. let's say on my personal desktop (win2k), I do a > > Pinging pc1.com [192.168.0.156] with 32 bytes of data > Reply from 192.168.0.156: bytes=32 time<10ms TTL=128 > > ping pc-wan-link.com [192.168.0.156] with 32 bytes of data > Reply from 192.168.0.156: bytes=32 time<10ms TTL=128 > > See.. Same IP, diff Hostname This is a very normal effect. There are canonical names and aliases in DNS servers. There are various reasons for doing this, too. It's a "not a worry at all." > [shrike@shrike log]$ host 192.168.0.156 > 156.0.168.192.in-addr.arpa domain name pointer pc-wan-link.com. OK, this is one interface with two addresses. The pc-wan-link.com is the canonical (real) address. The other one is an alias for convenience. (If it reads "pc1.com", though, it is setup very badly unless your address is REALLY 216.157.4.105. I hope that was simply for illustration. Otherwise you are banned from the pc1.com domain, probably no great loss. It's current owner has it up for sale.) > > Any manner of interesting things can be going on here. One possibility > > is aliased addresses. Another is an invisible proxy server. > > So.. I think there's a screwup in corporate IT. DNS server has been > configured hard-coded mappings of pc hostnames to IPs they dynamically > assign.????? See above. It's purely an aliasing thing. I have a machine setup with both multiple names for the same IP address and multiple IP addresses for the same NIC. > > Of course, the simple thing might be to call corporate IT and see if > > they can explain what you see. > > > I doubt they'll be bothered. I doubt it, too, if they REALLY call your machine pc1.com as an alias. They are setup "technically" very badly. That would indicate their being freewheeling screwups. > is there a way to get ssh to put in the IP add instead of the hostname? > since 1 Ip resolves to 2 hostnames. All I can say here is "RTFM". I don't know of one. There might be one. {^_^} -- Shrike-list mailing list Shrike-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/shrike-list
