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Track LXC container configs and fix network-interfaces

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- proxmox/lxc/103.conf: Pi-hole LXC (firewall=0 to fix NAT via fwbr)
- proxmox/lxc/104.conf: Traefik LXC
- proxmox/network-interfaces: Proxmox network config with DNAT/MASQUERADE
  rules; fixes tpost-up typo so DNS DNAT persists across reboots

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Adyrem
2026-05-15 19:52:43 +02:00
parent 62e5027d24
commit d1d38df0e4
3 changed files with 80 additions and 0 deletions
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proxmox/network-interfaces
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auto lo
iface lo inet loopback
iface nic0 inet manual
auto vmbr0
iface vmbr0 inet static
address 192.168.1.10/24
gateway 192.168.1.1
bridge-ports nic0
bridge-stp off
bridge-fd 0
post-up iptables -t nat -A PREROUTING -i vmbr0 -p tcp --dport 80 -j DNAT --to-destination 10.10.1.3:80
post-up iptables -t nat -A PREROUTING -i vmbr0 -p tcp --dport 443 -j DNAT --to-destination 10.10.1.3:443
post-down iptables -t nat -D PREROUTING -i vmbr0 -p tcp --dport 80 -j DNAT --to-destination 10.10.1.3:80
post-down iptables -t nat -D PREROUTING -i vmbr0 -p tcp --dport 443 -j DNAT --to-destination 10.10.1.3:443
post-up iptables -t nat -A PREROUTING -i vmbr0 -p udp --dport 53 -j DNAT --to-destination 10.10.1.2:53
post-up iptables -t nat -A PREROUTING -i vmbr0 -p tcp --dport 53 -j DNAT --to-destination 10.10.1.2:53
post-up iptables -t nat -A POSTROUTING -p udp -d 10.10.1.2 --dport 53 -j MASQUERADE
post-up iptables -t nat -A POSTROUTING -p tcp -d 10.10.1.2 --dport 53 -j MASQUERADE
post-down iptables -t nat -D PREROUTING -i vmbr0 -p udp --dport 53 -j DNAT --to-destination 10.10.1.2:53
post-down iptables -t nat -D PREROUTING -i vmbr0 -p tcp --dport 53 -j DNAT --to-destination 10.10.1.2:53
post-down iptables -t nat -D POSTROUTING -p udp -d 10.10.1.2 --dport 53 -j MASQUERADE
post-down iptables -t nat -D POSTROUTING -p tcp -d 10.10.1.2 --dport 53 -j MASQUERADE
source /etc/network/interfaces.d/*
auto vmbr1
iface vmbr1 inet static
address 10.10.1.1/24
bridge-ports none
bridge-stp off
bridge-fd 0
post-up iptables -t nat -A POSTROUTING -s 10.10.1.0/24 -o vmbr0 -j MASQUERADE
post-down iptables -t nat -D POSTROUTING -s 10.10.1.0/24 -o vmbr0 -j MASQUERADE
auto vmbr2
iface vmbr2 inet static
address 10.10.2.1/24
bridge-ports none
bridge-stp off
bridge-fd 0
post-up iptables -t nat -A POSTROUTING -s 10.10.2.0/24 -o vmbr0 -j MASQUERADE
post-down iptables -t nat -D POSTROUTING -s 10.10.2.0/24 -o vmbr0 -j MASQUERADE
auto vmbr3
iface vmbr3 inet static
address 10.10.3.1/24
bridge-ports none
bridge-stp off
bridge-fd 0
post-up iptables -t nat -A POSTROUTING -s 10.10.3.0/24 -o vmbr0 -j MASQUERADE
post-down iptables -t nat -D POSTROUTING -s 10.10.3.0/24 -o vmbr0 -j MASQUERADE