Ciao,
49.html states:
dhclient(8) now accepts 'egress' as an interface name, meaning
whichever interface is marked as being in the 'egress' group.
but the manual page doesn't mention it.
Also it seems to me that dhclient.c:get_ifname() uses an error()
call with a %m format without any errno around. (Nice & fat %m.)
(Since the data was filled in from the kernel, it even seems to be
sufficient to replace the entire conditional with
(void)strlcpy(ifi->name, arg, IFNAMSIZ);)
Btw., ifconfig(8) doesn't state at all that there is a limit
imposed on the length of groupnames.
And ifconfig.c even restricts availability of groups to
#ifndef SMALL
but neither does ifconfig.8 state that nor does dhclient.c do any
such check; it surely will get ENOSYS or something in the end
though..
--steffen
diff --git a/sbin/dhclient/dhclient.8 b/sbin/dhclient/dhclient.8
index 9d77c7e..3694ff1 100644
--- a/sbin/dhclient/dhclient.8
+++ b/sbin/dhclient/dhclient.8
@@ -57,6 +57,14 @@ The name of the network interface that
.Nm
should attempt to
configure must be specified on the command line.
+The special name
+.Ar egress
+will be automatically expanded to the interface which is assigned to the
+.Em egress
+group.
+See
+.Xr ifconfig 8
+for more about groups.
.Pp
The options are as follows:
.Bl -tag -width "-p port"
@@ -169,7 +177,8 @@ database of acquired leases
.Xr dhclient-script 8 ,
.Xr dhcp 8 ,
.Xr dhcpd 8 ,
-.Xr dhcrelay 8
+.Xr dhcrelay 8 ,
+.Xr ifconfig 8
.Sh AUTHORS
.An -nosplit
.Nm
diff --git a/sbin/dhclient/dhclient.c b/sbin/dhclient/dhclient.c
index 8d35021..1c6ac40 100644
--- a/sbin/dhclient/dhclient.c
+++ b/sbin/dhclient/dhclient.c
@@ -2104,7 +2104,7 @@ get_ifname(char *ifname, char *arg)
}
if (strlcpy(ifi->name, arg, IFNAMSIZ) >= IFNAMSIZ)
- error("Interface name too long: %m");
+ error("Interface name too long");
free(ifgr.ifgr_groups);
close(s);
