Maintaining communications in a failover instance via network address translation

One or more non-transitory computer-readable media having program code stored thereon, the program code comprising instructions to:

• maintain session information for one or more sessions established with a primary service instance, wherein the maintained session information indicates a first network address that is shared between the primary service instance and a backup service instance as a destination address for the one or more sessions;
• periodically provide the maintained session information to the backup service instance;
• identify a failover condition for the primary service instance;
• and
• transition the one or more sessions from the primary service instance to the backup service instance.

An apparatus comprising:

• a processor;
• and
• a computer-readable medium having instructions stored thereon that are executable by the processor to cause the apparatus to,
• maintain session information for one or more sessions established with a primary service instance, wherein the maintained session information indicates a first network address that is shared between the primary service instance and a backup service instance as a destination address for the one or more sessions;
• periodically provide the maintained session information to the backup service instance;
• identify a failover condition for the primary service instance;
• and
• transition the one or more sessions from the primary service instance to the backup service instance.