19f451913e
Whenever OSPF virtual-link is created, a virtual interface is associated with it. Name of the virtual interface is derived by combining "VLINK" string with the value of vlink_count, which is a global variable. Problem: Consider a scenario where 2 virtual links A and B are created in OSPF with virtual interfaces VLINK0 and VLINK1 respectively. When virtual-link A is unconfigured and reconfigured, new interface name derived for it will be VLINK1, which is already associated with virtual-link B. Due to this, both virtual-links A and B will point to the same interface, VLINK1. During FRR restart when signal handler is called, OSPF goes through all the virtual links and deletes the interface(oi) associated with it. During the deletion of interface for virtual-link B,it accesses the interface which was deleted already(which was deleted during deletion of virual-link A) and whose fields were set to NULL. This leads to OSPF crash. Fixed it by not decrementing vlink_count during unconfig/deletion for virtual-link. Signed-off-by: Pooja Jagadeesh Doijode <pdoijode@nvidia.com> |
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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