- Key Features in Junos OS Release 22.2
- play_arrow Junos OS Release Notes for ACX Series
- play_arrow Junos OS Release Notes for cRPD
- play_arrow Junos OS Release Notes for cSRX
- play_arrow Junos OS Release Notes for EX Series
- play_arrow Junos OS Release Notes for JRR Series
- play_arrow Junos OS Release Notes for MX Series
- play_arrow What's New
- play_arrow What's New in 22.2R1-S2
- play_arrow What's New in 22.2R1
- EVPN
- High Availability
- Interfaces
- IP Tunneling
- Junos Telemetry Interface
- Licensing
- MACsec
- MPLS
- Platform and Infrastructure
- Precision Time Protocol (PTP)
- Routing Policy and Firewall Filters
- Routing Protocols
- Routing Policy and Firewall Filters
- Source Packet Routing in Networking (SPRING) or Segment Routing
- Software Installation and Upgrade
- Subscriber Management and Services
- VPNs
- Additional Features
- What’s Changed
- Known Limitations
- Open Issues
- Resolved Issues
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for NFX Series
- play_arrow Junos OS Release Notes for PTX Series
- play_arrow Junos OS Release Notes for QFX Series
- play_arrow Junos OS Release Notes for vMX
- play_arrow Junos OS Release Notes for vRR
- play_arrow Junos OS Release Notes for vSRX
- Licensing
- Finding More Information
- Requesting Technical Support
- Revision History
Network Address Translation (NAT)
NAT support for DNS (SRX Series, vSRX, and cSRX)—Starting in Junos OS Release 22.2R1, you can use DNS and a fully qualified domain name (FQDN) with either source NAT or destination NAT as part of your NAT configuration.
You can use DNS name servers to resolve hostnames to IP addresses. A DNS cache time to live (TTL) is introduced under the address-book option for each DNS name entry. We support a minimum DNC cache TTL of 16 seconds.
In case of multiple IP addresses in the DNS response, the first IP address in the response is added to the NAT pool.
[See Address Books and Address Sets and show security nat source pool.]