pfSense

	/* Calculate smaller mtu and enforce it */

        $smallermtu = 0;

        foreach ($members as $member) {

                $mtu = get_interface_mtu($member);

		if ($smallermtu == 0 && !empty($mtu))

			$smallermtu = $mtu;

	foreach ($members as $member) {

		if (!array_key_exists($member, $checklist))

			continue;

		/* make sure the parent interface is up */

		mwexec("/sbin/ifconfig {$member} mtu {$smallermtu}");

		interfaces_bring_up($member);

	}

	mwexec("/sbin/ifconfig {$laggif} laggproto {$lagg['proto']}");