2012-04-25 2026-04-03 IETF Review or IESG Approval 0 No-Action The map-cache is kept alive and no packet encapsulation occurs. 1 Natively-Forward The packet is not encapsulated or dropped but natively forwarded. 2 Send-Map-Request The packet invokes sending a Map-Request. 3 Drop/No-Reason A packet that matches this map-cache entry is dropped. An ICMP Unreachable message SHOULD be sent. 4 Drop/Policy-Denied A packet matching this Map-Cache entry is dropped because the target EID is policy-denied by the xTR or the Mapping System. 5 Drop/Auth-Failure A packet matching this Map-Cache entry is dropped because the Map-Request for the target EID fails an authentication check by the xTR or the Mapping System. 6-7 Unassigned Registry closed per . First Come First Served None 0 None None HMAC-SHA-1-96-None 1 None HMAC-SHA-256-128-None 2 None HMAC-SHA256-128+HKDF-SHA256 3 Unassigned 4-255 First Come First Served 0 Reserved 1 LISP_2048MODP_AES128_CBC_SHA256 2 LISP_EC25519_AES128_CBC_SHA256 3 LISP_2048MODP_AES128_GCM 4 LISP_3072MODP_AES128_GCM 5 LISP_256_EC25519_AES128_GCM 6 LISP_256_EC25519_CHACHA20_POLY1305 7-255 Unassigned Specification Required Luigi Iannone, Albert Cabellos 0 Null Body 1 AFI List 2 Instance ID 3 AS Number 4 Unassigned 5 Geo-Coordinates (DEPRECATED) 6 Unassigned 7 NAT-Traversal 8 Unassigned 9 Multicast Info 10 Explicit Locator Path 11 Security Key 12 Source/Dest Key 13 Replication List Entry 14-16 Unassigned 17 Geo-Location 18-254 Unassigned 255 Vendor Specific Standards Action 0 Reserved 1 LISP Map-Request 2 LISP Map-Reply 3 LISP Map-Register 4 LISP Map-Notify 5 LISP Map-Notify-Ack 6 LISP DDT Map-Referral (TEMPORARY - registered 2017-04-19, extension registered 2026-04-03, expires 2027-04-19) 7 Unassigned 8 LISP Encapsulated Control Message 9-14 Unassigned 15 LISP Shared Extension Message 0-1023 Standards Action 1024-4095 First Come First Served 0-1023 Unassigned 1024 Map-Subscribe/Map-Subscribe-Ack 1025 Map-Bulk-Request/Map-Bulk-Reply 1026 Map-Solicit-Request/Map-Solicit-Reply 1027-4095 Unassigned Specification Required Darrel Lewis, Luigi Iannone 0x00 Reserved 0x01 IPv4 0x02 IPv6 0x03 Ethernet 0x04 NSH 0x05-0x7D Unassigned 0x7E-0x7F Experimentation and testing 0x80-0xFD Unassigned (shim headers) 0xFE-0xFF Experimentation and testing (shim headers) Specification Required Albert Cabellos, Dino Farinacci A Map-Request-A 4 Authoritative Bit M Map-Request-M 5 Map Data Present Bit P Map-Request-P 6 RLOC-Probe Request Bit S Map-Request-S 7 Solicit Map-Request (SMR) Bit p Map-Request-p 8 Proxy-ITR Bit s Map-Request-s 9 Solicit Map-Request Invoked Bit I Map-Request-I 11 xTR-ID Bit L Map-Request-L 17 Local xTR D Map-Request-D 18 Don't Map-Reply Bit Specification Required Albert Cabellos, Dino Farinacci P Map-Reply-P 4 RLOC-Probe Bit E Map-Reply-E 5 Echo-Nonce Capable Bit S Map-Reply-S 6 Security Bit Specification Required Albert Cabellos, Dino Farinacci P Map-Register-P 4 Proxy Map-Reply Bit S Map-Register-S 5 LISP-SEC Capable Bit I Map-Register-I 6 xTR-ID Present Bit Specification Required Albert Cabellos, Dino Farinacci N Map-Request-N 1 Notification-Requested Bit Specification Required Albert Cabellos, Dino Farinacci S ECM-S 4 Security Bit D ECM-D 5 LISP-DDT Bit E ECM-E 6 Forward to ETR Bit M ECM-M 7 Destined to Map-Server Bit Specification Required Albert Cabellos, Dino Farinacci A EID-Record-A 19 Authoritative Bit Specification Required Albert Cabellos, Dino Farinacci L RLOC-Record-L 13 Local RLOC Bit p RLOC-Record-p 14 RLOC-Probe Reply Bit R RLOC-Record-R 15 RLOC Reachable Bit Specification Required Damien Saucez, Luigi Iannone 0 Reserved 1 LISP-SEC-ECM-EXT 2-255 Unassigned Specification Required Damien Saucez, Luigi Iannone 0 Reserved 1 LISP-SEC-MR-EXT 2-255 Unassigned Specification Required Damien Saucez, Luigi Iannone 0 NOPREF 1 AUTH-HMAC-SHA-1-96 2 AUTH-HMAC-SHA-256-128 3-65535 Unassigned Specification Required Damien Saucez, Luigi Iannone 0 Reserved None None 1 NULL-KEY-WRAP-128 None 2 AES-KEY-WRAP-128+HKDF-SHA256 3-65535 Unassigned Specification Required Damien Saucez, Luigi Iannone 0 NOPREF 1 HKDF-SHA1-128 2 HKDF-SHA256 3-65535 Unassigned Mohamed_Boucadair mailto:mohamed.boucadair&orange.com 2017-05-01