ISC DHCP 4.2.x includes features that were not included in DHCP 4.1.x.
These include:
+Processing the DHCP to DNS server transactions in an asyncrhonous fashion.
+The DHCP server or client can now continue with it's processing while
+awaiting replies from the DNS server.
+
There are a number of DHCPv6 limitations and features missing in this
release, which will be addressed in the future:
calculations. Invalid renew and rebinding times (e.g., greater than the
determined lease time) are omitted.
+- Processing the DHCP to DNS server transactions in an asyncrhonous fashion.
+ The DHCP server or client can now continue with it's processing while
+ awaiting replies from the DNS server.
+
Changes since 4.1.0 (bug fixes)
- Remove infinite loop in token_print_indent_concat().