Hetzer MAC and routing problems - SOLVED

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Hetzer MAC and routing problems - SOLVED (4 Replies, Read 33000 times)

transcom99	# January 8, 2025, 7:34 am
Group: Member Post Group: Newbie Posts: 28 Status:	After lots of hair pulling, the issue of Hetzner MAC abuse emails, was finally solved, (without any help, input or understanding from them) If your getting these abuse emails because your VM is sending generated macs, do this: sudo ebtables -t nat -A POSTROUTING -o enXXXXX -j snat --to-source xx:xx:xx:xx:xx::c5 change the NIC interface as required and get your MAC with ip a Now make a systemd to start it on boot as a service: [Unit] Wants=network-online.target After=network-online.target [Service] Type=simple Restart=always RestartSec=1 User=root ExecStart=/root/startup.sh [Install] WantedBy=default.target Your startup file can be anywhere, ours is in root/startup.sh, we also added a route for a Hetzner provided subnet: #!/bin/sh sudo ebtables -t nat -A POSTROUTING -o enXXXX -j snat --to-source xx:xx:xx:xx:xx:c5 ip route add xxx.xx.xx.xxx/29 dev viifbr0 Thats it, hours of pain solved. Cheers,Bill
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Hetzer MAC and routing problems - SOLVED

transcom99	# January 8, 2025, 7:39 am \| Post: 1
Group: Member Post Group: Newbie Posts: 28 Status:	just to add, in case your un aware.. after creating the systemd systemctl daemon-reload systemctl enable ebtables.service start it immediately to test before reboot: systemctl start ebtables.service
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Hetzer MAC and routing problems - SOLVED

jevingala	# January 8, 2025, 10:09 am \| Post: 2
Group: Virtualizor Team Post Group: Super Member Posts: 778 Status:	Hi, Does it not helps using this part of the guide : https://www.virtualizor.com/docs/admin/hetzner-network/#hetzner-subnet-ip-range ----------------------- Regards, Virtualizor Team. http://virtualizor.com/
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Hetzer MAC and routing problems - SOLVED

transcom99	# January 8, 2025, 10:17 am \| Post: 3
Group: Member Post Group: Newbie Posts: 28 Status:	Hi, we started with the guide, and although it worked, the abuse message quickly came from Hetzner, with the threats of blocking etc. This turned into a slanging match as Hetzner refused to offer any help on servers saying its our issue, so we found our own solution and it works fine. In ref to your link, we did a slightly different way so all the IP's could be used in a /29 . the gateway was the main server ipv4 in routed mode, and then added the route into the systemd as shown. It all works extremely well now !
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Hetzer MAC and routing problems - SOLVED

shella	# June 25, 2025, 8:11 am \| Post: 4
Group: Member Post Group: Newbie Posts: 1 Status:	This article is a must-read for anyone seeking expert-level guidance.
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