v0.1.3

edit: Due to rust-lang/rust#115010 which triggers an error on Rust 1.80, it's required to build einat v0.1.3 with Rust >= 1.81. (fixed with 9e7bb8d which is not included in v0.1.3)

Highlights

• Fix a bug that might cause silent packet drop, which has been observed on PPPoE interface for large packets.
• Use pure-rust Aya loader by default, einat now has zero native dependency except libc on target platform.
  This should make einat be built more easily especially for cross-compilation.
• Allow attaching eBPF programs with new TCX interface, aya loader only.
• Allow do SNAT for specified internal network only

# do SNAT for internal packets with source of 192.168.1.0/24 only
einat -i extern0 --hairpin-if intern0 lo --internal 192.168.1.0/24

🚀 Features

• Add pure-Rust aya loading backend support
• Add config option to toggle TCX interface usage
• Allow do NAT for specified internal network only
• Add CLI options for snat_internals and bpf_loader

🐛 Bug Fixes

• Workaround an unroll failure
• (ebpf) Always pull first header bytes
• Split EINAT_BPF_CFLAGS args

Improve

• Increase log level of libbpf netlink error to DEBUG
• Describe NAT44 enabling more specifically
• Log eBPF loader used
• Enable bpf_fib_lookup_external by default on kernel>=6.7