Features

dpvs: Support QUIC/HTTP3, add nginx patches and facilitating code snippets for use of quic.
dpvs: Support SCTP forwarding implementation.
dpvs: Support LLDP protocol.
dpvs: Update default dpdk version to dpdk-stable-20.11.10.
dpvs: IPVS supports ipset based allow/deny list which allows for cidr acl rule.
dpvs: Support IPv6 link-local address auto configuration.
tools: Add ipset supports in dpvs-agent.
tools: Add snapshot caches for dpvs-agent virtual server apis.
doc: Update README.md.

Bugfixes

dpvs: Fix multicast address sync problems and add dpip supports for multicast address lookup.
dpvs: Fix build errors and warnings with gcc verison 8.0+.
dpvs: Fix coredump problem when starting dpvs with insufficient memory.
dpvs: Use dpdk random generator in critical datapath for performance enhancement.
dpvs: Fix ipset default address family problem.
dpvs: Fix segmentation fault problem when running on machines whose cpu number is over DPVS_MAX_LCORE.
dpvs: Refactor netif_rte_port_alloc with netif_alloc.
dpvs: Fix prolems in IPv6 all-nodes and all-routers address initialization.
dpvs: Fix memory corruption problem when retrieving nic's xstats.
tools: Fix concurrency racing problem when dpvs-agent and healthcheck changing rs simultaneously.
tools: Fix healthchech bad icmp checksum problem ocasionally appeared in udp and udpping checkers.
tools: Fix keepalived quorum up script not excuted problem when old rs removed and new ones added in a reload.
tools: Fix ipvsadm local IP won't remove problem.
tools: Fix ipset list-all problem and improve efficiency.
tools: Fix dpip delay problem when list empty ipset with sorting enabled.