FAQ: Minor fix in formatting authored by Ondřej Zajíček's avatar Ondřej Zajíček
......@@ -83,10 +83,8 @@ configuration of IP ranges.
There are several ways how to fix it:
* Use tap mode instead of tun mode, it behaves like one L2 network
* Use IPIP or GRE tunnels inside OpenVPN between clients and server and route
network traffic through these tunnels
* Use different VPN tool than OpenVPN
Perhaps there are some options unknown to us to make OpenVPN work transparently
......@@ -132,18 +130,15 @@ disrupt working configs, the problem manifests by routes that are imported as
unreachable routes. There are several ways to solve that:
* The old behavior can be activated by _gateway direct_ option.
* If flat topology is used (one L2 network with attached border BGP routers,
IBGP sessions are to direct neighbors - not multihop), it is possible to just
add device routes using direct protocol, in that case it is also usually
needed to add _next hop self_ option to IBGP protocols on BGP border routers
(not to the route server), because without that NEXT_HOP contains IP address
of the border router of neighbor AS, which is usually one hop away.
* If OSPF is used for the internal network, it should work just fine, but note
that there should be in IGP table not only internal networks, but also the
border networks connecting local and neighbor's border routers.
* Trivial but manual workaround is just to add a /32 static route for each
address in NEXT_HOP attributes of IBGP routes.
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