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https://github.com/unifi-utilities/unifios-utilities.git
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59 lines
2.2 KiB
Bash
59 lines
2.2 KiB
Bash
#!/bin/bash
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# This script will create a macvlan bridge interface to allow communication
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# between container networks and host networks.
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# An interface called brX.mac will be created, where X = $VLAN configured below.
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# The interface will be assigned an IP of $IPV4_GW, and $IPV6_GW configured below.
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# Routes will be added for the container IP $IPV4 and $IPV6.
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# Script is based on 10-dns.sh from unifios-utilities.
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## CONFIGURATION VARIABLES
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# VLAN ID network container will be on. This VLAN has to first be configured as a
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# network in Unifi Network settings with a unique IP/subnet. Do not use the same
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# IP in the unifi network settings as you will use below for IPV4_IP or IPV4_GW.
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VLAN=5
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# IP addresses of container.
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IPV4_IP="10.0.5.3"
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# Gateway IP address of macvlan interface. IP above should be in this subnet.
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IPV4_GW="10.0.5.1/24"
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# IPv6 container and gateway addresses. These can be empty if not using IPv6.
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# Preferably generate your own ULA instead of using the default one below.
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# A public IPv6 prefix based on your ISP's prefix can be used too, but any
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# prefix changes for dynamic IPv6 prefixes have to be modified manually.
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IPV6_IP="fd62:89a2:fda9:e23::3"
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IPV6_GW="fd62:89a2:fda9:e23::1/64"
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## END OF CONFIGURATION
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# set VLAN bridge promiscuous
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ip link set "br${VLAN}" promisc on
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# create macvlan bridge and add IPv4 IP
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ip link add "br${VLAN}.mac" link "br${VLAN}" type macvlan mode bridge
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ip addr add "${IPV4_GW}" dev "br${VLAN}.mac" noprefixroute
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# (optional) add IPv6 IP to VLAN bridge macvlan bridge
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if [ -n "${IPV6_GW}" ]; then
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ip -6 addr add "${IPV6_GW}" dev "br${VLAN}.mac" noprefixroute
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fi
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# set macvlan bridge promiscuous and bring it up
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ip link set "br${VLAN}.mac" promisc on
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ip link set "br${VLAN}.mac" up
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# add IPv4 route to container
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ip route add "${IPV4_IP}/32" dev "br${VLAN}.mac"
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# (optional) add IPv6 route to container
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if [ -n "${IPV6_IP}" ]; then
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ip -6 route add "${IPV6_IP}/128" dev "br${VLAN}.mac"
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fi
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# Make DNSMasq listen to the container network for split horizon or conditional forwarding
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if ! grep -qxF "interface=br${VLAN}.mac" /run/dnsmasq.conf.d/custom.conf; then
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echo "interface=br${VLAN}.mac" >>/run/dnsmasq.conf.d/custom.conf
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kill -9 "$(cat /run/dnsmasq.pid)"
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fi
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