• Home
  • Getting Started
  • Registry Authentication
  • Address Space
  • BGP communities
  • FAQ

• How-To

  • Wireguard
  • Openvpn
  • IPsec With Public Keys
  • Tinc
  • GRE on FreeBSD
  • GRE on OpenBSD
  • IPv6 Multicast (PIM-SM)
  • Bird / Bird2
  • Quagga
  • OpenBGPD
  • Mikrotik RouterOS
  • EdgeRouter
  • Static routes on Windows
  • Universal Network Requirements
  • VyOS
  • NixOS

• Services

  • IRC
  • Whois registry
  • DNS
  • Public DNS
  • Looking Glasses
  • Automatic Peering
  • Repository Mirrors
  • Distributed Wiki
  • Certificate Authority
  • Route Collector

• Internal

  • Internal services
  • Interconnections
  • APIs
  • Show and Tell
    
  • Historical services

• External Tools

  • Paste Board
  • Git Repositories

---

GRE on FreeBSD

This page describes how to configure GRE tunnels on FreeBSD.

Requirements

• Root access to a FreeBSD system.
• Loaded if_gre.ko or device gre
• A static IPv4 address on both ends if you would like to preserve your sanity.

Create a temporary gre tunnel

ifconfig gre$INDEX create
ifconfig gre$INDEX tunnel $TUNNEL_SRC $TUNNEL_DST
ifconfig gre$INDEX inet $LOCAL $REMOTE netmask 0xffffffff
ifconfig gre$INDEX descr $DESCR

Create a persistent gre tunnel

Add this to your rc.conf.

cloned_interfaces="$cloned_interfaces gre0"
ifconfig_gre0="10.0.0.1 10.0.0.2 netmask 0xffffffff tunnel 1.2.3.4 5.6.7.8 descr foo"

Hosted by: xuu, nurtic-vibe, toBee, burble | Accessible via: dn42, dn42.eu, dn42.dev