RHEL8 Networking

New Main Features

Updated TCP/IP stack (v4.18)

• Global increased performance with BBR congestion control algorithm
• DNS stub resolver improvements via glibc 2.28

Performance monitoring and network control

• eBPF for networking, tracing, firewalls, and filtering (tech preview in RHEL 8.0)

IPVLAN

• Scalable networking for containers (no MAC address limitation)

Offloads

• Ipsec crypto VPN, TC (tech preview in RHEL 8.0)

NetworkManager 1.14

• Default CLI and API to configure services
• Reduced footprint
• Can’t be deactivated or removed

Firewalld 0.6.3

• Enabled by default
• Nftables backend
• Efficient and better performance
• New tools (iptables-translate) to convert iptables to nftables

DPDK for public cloud

• Enables fast networking on clouds
• Portability on hybrid clouds