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:/ snap / core20 / current / usr / lib / initramfs-tools / etc / dhcp / dhclient-enter-hooks.d /
Filename : config
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#!/bin/sh

case "$reason" in
BOUND)
	{
		echo "DEVICE='$interface'"
		echo "PROTO='dhcp'"
		echo "IPV4PROTO='dhcp'"
		echo "IPV4ADDR='$new_ip_address'"
		echo "IPV4NETMASK='$new_subnet_mask'"
		echo "IPV4BROADCAST='$new_broadcast_address'"
		# Only keep the first router
		echo "IPV4GATEWAY='${new_routers%% *}'"
		i=0
		for name in $new_domain_name_servers; do
		    echo "IPV4DNS$i='$name'"
		    i=$((i+1))
		done
		echo "ROOTSERVER='${new_routers%% *}'"
		echo "HOSTNAME='$new_host_name'"
		echo "DNSDOMAIN='$new_domain_name'"
		if [ -n "$new_domain_search" ]; then
			if [ -n "$new_domain_name" ]; then
				domain_in_search_list=""
				for domain in $new_domain_search; do
					if [ "$domain" = "${new_domain_name}" ] ||
						[ "$domain" = "${new_domain_name}." ]; then
						domain_in_search_list="Yes"
					fi
				done
				if [ -z "$domain_in_search_list" ]; then
					new_domain_search="$new_domain_name $new_domain_search"
				fi
			fi
			echo "DOMAINSEARCH='${new_domain_search}'"
		elif [ -n "$new_domain_name" ]; then
			echo "DOMAINSEARCH='${new_domain_name}'"
		fi
	} >"/run/net-$interface.conf"
	;;
BOUND6)
	{
		echo "DEVICE6='$interface'"
		echo "IPV6PROTO='dhcp6'"
		echo "IPV6ADDR='$new_ip6_address'"
		echo "IPV6NETMASK='$new_ip6_prefixlen'"
		i=0
		for name in $new_dhcp6_name_servers; do
		    echo "IPV6DNS$i='$name'"
		    i=$((i+1))
		done
		if [ -n "$new_dhcp6_domain_search" ]; then
			echo "IPV6DOMAINSEARCH='$new_dhcp6_domain_search'"
		fi
	} >"/run/net6-$interface.conf"
	;;
esac