diff --git a/netlink/netlink_linux.go b/netlink/netlink_linux.go
index 39630c3ec..92accd4aa 100644
--- a/netlink/netlink_linux.go
+++ b/netlink/netlink_linux.go
@@ -3,7 +3,6 @@ package netlink
 import (
 	"encoding/binary"
 	"fmt"
-	"math/rand"
 	"net"
 	"sync/atomic"
 	"syscall"
@@ -949,7 +948,7 @@ func setBridgeMacAddress(s int, name string) error {
 	copy(ifr.IfrnName[:], name)
 
 	for i := 0; i < 6; i++ {
-		ifr.IfruHwaddr.Data[i] = int8(rand.Intn(255))
+		ifr.IfruHwaddr.Data[i] = randIfrDataByte()
 	}
 
 	ifr.IfruHwaddr.Data[0] &^= 0x1 // clear multicast bit
diff --git a/netlink/netlink_linux_arm.go b/netlink/netlink_linux_arm.go
new file mode 100644
index 000000000..7789ae275
--- /dev/null
+++ b/netlink/netlink_linux_arm.go
@@ -0,0 +1,9 @@
+package netlink
+
+import (
+	"math/rand"
+)
+
+func randIfrDataByte() uint8 {
+	return uint8(rand.Intn(255))
+}
diff --git a/netlink/netlink_linux_notarm.go b/netlink/netlink_linux_notarm.go
new file mode 100644
index 000000000..23c4a9271
--- /dev/null
+++ b/netlink/netlink_linux_notarm.go
@@ -0,0 +1,11 @@
+// +build !arm
+
+package netlink
+
+import (
+	"math/rand"
+)
+
+func randIfrDataByte() int8 {
+	return int8(rand.Intn(255))
+}
diff --git a/system/sysconfig.go b/system/sysconfig.go
index dcbe6c9cd..3e2f43b1e 100644
--- a/system/sysconfig.go
+++ b/system/sysconfig.go
@@ -4,10 +4,9 @@ package system
 
 /*
 #include <unistd.h>
-int get_hz(void) { return sysconf(_SC_CLK_TCK); }
 */
 import "C"
 
 func GetClockTicks() int {
-	return int(C.get_hz())
+	return int(C.sysconf(C._SC_CLK_TCK))
 }
diff --git a/system/sysconfig_notcgo.go b/system/sysconfig_notcgo.go
new file mode 100644
index 000000000..4bbb69896
--- /dev/null
+++ b/system/sysconfig_notcgo.go
@@ -0,0 +1,8 @@
+// +build linux,!cgo
+
+package system
+
+func GetClockTicks() int {
+	// TODO figure out a better alternative for platforms where we're missing cgo
+	return 100
+}