system: Linux mars.sprixweb.com 3.10.0-1160.119.1.el7.x86_64 #1 SMP Tue Jun 4 14:43:51 UTC 2024 x86_64

cmd: 

#!/bin/sh
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
#
# Format:
#       ifname=<interface>:<mac>
#
# Note letters in the macaddress must be lowercase!
#
# Examples:
# ifname=eth0:4a:3f:4c:04:f8:d7
#
# Note when using ifname= to get persistent interface names, you must specify
# an ifname= argument for each interface used in an ip= or fcoe= argument

# check if there are any ifname parameters
if ! getarg ifname= >/dev/null ; then
    return
fi

command -v parse_ifname_opts >/dev/null || . /lib/net-lib.sh

# Check ifname= lines
for p in $(getargs ifname=); do
    parse_ifname_opts $p
done