Constant IFACE_ADDR_COUNT 

pub const IFACE_ADDR_COUNT: usize = raw::IFACE_ADDR_COUNT; // 4usize

Max IP addresses an interface can hold at once.

This counts addresses from all sources: set by the application, learned from DHCP, formed by SLAAC. Adding one past this many fails with Full.

Ignored with alloc. Default: 4.