Date: Wed, 18 Apr 2001 18:31:07 -0700 From: Shankar Agarwal <shankar_agarwal@net.com> Cc: tech-kern@netbsd.org, bsd hackers <freebsd-hackers@FreeBSD.ORG> Subject: Question regarding ifconfig. Message-ID: <3ADE3FDB.E082BC69@net.com> References: <Pine.NEB.4.33.0103122044290.498-100000@fiona.amberites.invalid> <3AB7A76B.2BCF5D6E@net.com> <xofhf0ouurd.fsf@blubb.pdc.kth.se>
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Hi All,
I have a doubt about the ifconfig file. when i am trying to configure or
change ip address on the interface. The main calls setifaddr function
which calls ioctl function with command as SIOCGIFADDR by the following
lines
ifr->ifr_addr.sa_family = afp->af_af;
if (ioctl(s, afp->af_gifaddr, afp->af_ridreq) == 0)
clearaddr = 1;
Now i don't understand why the ioctl is called by SIOCGIFADDR when i am
configuring an ip address on the interface. Moreover i believe that when
ioctl returns successfully it returns 0 so the clearaddr will be set and
later on the ip address will be deleted.
Please help me out if i am interpreting it wrong as i am not able to
assign an ip address to the interface in my ported code.
Thanks
Regards
Shankar
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