//go:build linux

package agent

import (
	"testing"

	"golang.org/x/sys/unix"
)

func TestPodLinkLocalAddr(t *testing.T) {
	addr := podLinkLocalAddr()
	if got, want := addr.IP.String(), "fe80::2"; got != want {
		t.Fatalf("pod link-local IP = %s, want %s", got, want)
	}
	if ones, bits := addr.Mask.Size(); ones != 64 || bits != 128 {
		t.Fatalf("pod link-local mask = %d/%d, want 64/128", ones, bits)
	}
	if addr.Flags&unix.IFA_F_NODAD == 0 {
		t.Fatal("pod link-local address must disable DAD")
	}
	if addr.IP.Equal(linkLocalGW) {
		t.Fatal("pod and gateway link-local addresses must differ")
	}
}