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| author | Andreas Rammhold <andreas@rammhold.de> | 2023-02-14 16:17:03 +0100 |
|---|---|---|
| committer | Ondrej Zajicek <santiago@crfreenet.org> | 2023-02-14 16:17:03 +0100 |
| commit | eecc3f02e41bcb91d463c4c1189fd56bc44e6514 (patch) | |
| tree | 26e6b2e113536c63c0f63bceeb107e1844ce4a15 /proto/babel/config.Y | |
| parent | 0851fcde651301a886fefc574a4f739bf68119b9 (diff) | |
| download | bird-eecc3f02e41bcb91d463c4c1189fd56bc44e6514.tar.gz | |
Babel: Implement IPv4 via IPv6 extension (RFC 9229)
The patch implements an IPv4 via IPv6 extension (RFC 9229) to the Babel
routing protocol (RFC 8966) that allows annoncing routes to an IPv4
prefix with an IPv6 next hop, which makes it possible for IPv4 traffic
to flow through interfaces that have not been assigned an IPv4 address.
The implementation is compatible with the current Babeld version.
Thanks to Toke Høiland-Jørgensen for early review on this work.
Minor changes from committer.
Diffstat (limited to 'proto/babel/config.Y')
| -rw-r--r-- | proto/babel/config.Y | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/proto/babel/config.Y b/proto/babel/config.Y index 05210fa4..1b4dc6f5 100644 --- a/proto/babel/config.Y +++ b/proto/babel/config.Y @@ -25,7 +25,8 @@ CF_DECLS CF_KEYWORDS(BABEL, INTERFACE, METRIC, RXCOST, HELLO, UPDATE, INTERVAL, PORT, TYPE, WIRED, WIRELESS, RX, TX, BUFFER, PRIORITY, LENGTH, CHECK, LINK, NEXT, HOP, IPV4, IPV6, BABEL_METRIC, SHOW, INTERFACES, NEIGHBORS, - ENTRIES, RANDOMIZE, ROUTER, ID, AUTHENTICATION, NONE, MAC, PERMISSIVE) + ENTRIES, RANDOMIZE, ROUTER, ID, AUTHENTICATION, NONE, MAC, PERMISSIVE, + EXTENDED) CF_GRAMMAR @@ -67,6 +68,7 @@ babel_iface_start: BABEL_IFACE->tx_tos = IP_PREC_INTERNET_CONTROL; BABEL_IFACE->tx_priority = sk_priority_control; BABEL_IFACE->check_link = 1; + BABEL_IFACE->ext_next_hop = 1; }; @@ -143,6 +145,7 @@ babel_iface_item: | CHECK LINK bool { BABEL_IFACE->check_link = $3; } | NEXT HOP IPV4 ipa { BABEL_IFACE->next_hop_ip4 = $4; if (!ipa_is_ip4($4)) cf_error("Must be an IPv4 address"); } | NEXT HOP IPV6 ipa { BABEL_IFACE->next_hop_ip6 = $4; if (!ipa_is_ip6($4)) cf_error("Must be an IPv6 address"); } + | EXTENDED NEXT HOP bool { BABEL_IFACE->ext_next_hop = $4; } | AUTHENTICATION NONE { BABEL_IFACE->auth_type = BABEL_AUTH_NONE; } | AUTHENTICATION MAC { BABEL_IFACE->auth_type = BABEL_AUTH_MAC; BABEL_IFACE->auth_permissive = 0; } | AUTHENTICATION MAC PERMISSIVE { BABEL_IFACE->auth_type = BABEL_AUTH_MAC; BABEL_IFACE->auth_permissive = 1; } |