15fb7209ee
When IPv6 prefixes are sent over an IPv4 session, the UPDATE is sent with a link-local nexthop as global nexthop instead of a IPv4-mapped IPv6 address. If the peer interface has no IPv6 address, routes are not installed. Seen with bgp_nexthop_mp_ipv4_6 topotests on step2: > root@r2:/# vtysh -c 'show bgp ipv6 fd00💯:/64 json' | jq . > { > "prefix": "fd00💯:/64", > "paths": [ > { > "nexthops": [ > { > "ip": "fe80::449a:f8ff:fe67:1f93", > "hostname": "r1", > "afi": "ipv6", > "scope": "global", > "metric": 0, > "accessible": true > }, > { > "ip": "fe80::449a:f8ff:fe67:1f93", > "hostname": "r1", > "afi": "ipv6", > "scope": "link-local", > "accessible": true, > "used": true > } > ], > } > ] > } Now: > root@r2:/# vtysh -c 'show bgp ipv6 fd00💯:/64 json' | jq . > { > "prefix": "fd00💯:/64", > "paths": [ > "nexthops": [ > { > "ip": "::ffff:172.16.0.1", > "hostname": "r1", > "afi": "ipv6", > "scope": "global", > "metric": 0, > "accessible": true > }, > { > "ip": "fe80::3842:28ff:fe90:f815", > "hostname": "r1", > "afi": "ipv6", > "scope": "link-local", > "accessible": true, > "used": true > } > ], > } > ] > } Note that the link-local is still preferred over the global address. Fixes: 25995695f5 ("bgpd: set ipv4-mapped ipv6 for ipv4 with ipv6 nexthop") Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com> |
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| .github | ||
| alpine | ||
| babeld | ||
| bfdd | ||
| bgpd | ||
| debian | ||
| doc | ||
| docker | ||
| eigrpd | ||
| fpm | ||
| gdb | ||
| grpc | ||
| include | ||
| isisd | ||
| ldpd | ||
| lib | ||
| m4 | ||
| mgmtd | ||
| mlag | ||
| nhrpd | ||
| ospf6d | ||
| ospfclient | ||
| ospfd | ||
| pathd | ||
| pbrd | ||
| pceplib | ||
| pimd | ||
| pkgsrc | ||
| python | ||
| qpb | ||
| redhat | ||
| ripd | ||
| ripngd | ||
| sharpd | ||
| snapcraft | ||
| staticd | ||
| tests | ||
| tools | ||
| vrrpd | ||
| vtysh | ||
| watchfrr | ||
| yang | ||
| zebra | ||
| .clang-format | ||
| .dockerignore | ||
| .flake8 | ||
| .git-blame-ignore-revs | ||
| .gitignore | ||
| .isort.cfg | ||
| .pylintrc | ||
| .travis.yml | ||
| bootstrap.sh | ||
| buildtest.sh | ||
| config.version.in | ||
| configure.ac | ||
| COPYING | ||
| Makefile.am | ||
| README.md | ||
| stamp-h.in | ||
| version.h | ||
FRRouting
FRR is free software that implements and manages various IPv4 and IPv6 routing protocols. It runs on nearly all distributions of Linux and BSD and supports all modern CPU architectures.
FRR currently supports the following protocols:
- BGP
- OSPFv2
- OSPFv3
- RIPv1
- RIPv2
- RIPng
- IS-IS
- PIM-SM/MSDP
- LDP
- BFD
- Babel
- PBR
- OpenFabric
- VRRP
- EIGRP (alpha)
- NHRP (alpha)
Installation & Use
For source tarballs, see the releases page.
For Debian and its derivatives, use the APT repository at https://deb.frrouting.org/.
Instructions on building and installing from source for supported platforms may be found in the developer docs.
Once installed, please refer to the user guide for instructions on use.
Community
The FRRouting email list server is located here and offers the following public lists:
| Topic | List |
|---|---|
| Development | dev@lists.frrouting.org |
| Users & Operators | frog@lists.frrouting.org |
| Announcements | announce@lists.frrouting.org |
For chat, we currently use Slack. You can join by clicking the "Slack" link under the Participate section of our website.
Contributing
FRR maintains developer's documentation which contains the project workflow and expectations for contributors. Some technical documentation on project internals is also available.
We welcome and appreciate all contributions, no matter how small!
Security
To report security issues, please use our security mailing list:
security [at] lists.frrouting.org