On Sat, Jun 10, 2017 at 3:52 PM, Pascal Hambourg <pas...@plouf.fr.eu.org> wrote: > Le 10/06/2017 à 03:57, Joel Rees a écrit : >> >> Experimenting from the command line, I find myself puzzled about the >> arguments for ifconfig. >> >> Reading the manual, it would appear that the arguments for ifconfig >> should be something like this: >> >> ifconfig eth0 netmask 255.255.255.224 netmask 255.255.255.224 >> broadcast 10.19.23.223 10.19.23.94 >> >> But the command returns with >> >> SIOCSIFNETMASK: Can't allocate this address. >> SIOCSIFBRDADDR: Can't allocate this address. > > > You set the mask twice.
Actually, I did not set the the mask twice, I just typed it it twice. ;/ I hand-typed it from memory, as I noted in my followup. But I did check, and I get the same kinds of results when I without typing extra parameters. > The address must be set before the mask and broadcast address. Now there's another puzzle, because the man page indicates that the address should come after the options. I had been used to typing it before the options, and was getting the same kind of results with the address before the parameters, I think. -- Joel Rees One of these days I'll get someone to pay me to design a language that combines the best of Forth and C. Then I'll be able to leap wide instruction sets with a single #ifdef, run faster than a speeding infinite loop with a #define, and stop all integer size bugs with a bare cast. More of my delusions: http://reiisi.blogspot.com/2017/05/do-not-pay-modern-danegeld-ransomware.html http://reiisi.blogspot.jp/p/novels-i-am-writing.html
