diff --git a/network_interface.nim b/network_interface.nim
index b213496..a9cc891 100644
--- a/network_interface.nim
+++ b/network_interface.nim
@@ -26,7 +26,7 @@ proc getifaddrs(ifap: ptr ptr Ifaddrs): int {.header: "<ifaddrs.h>", importc: "g
 proc freeifaddrs(ifap: ptr Ifaddrs): void {.header: "<ifaddrs.h>", importc: "freeifaddrs".}
 proc if_nametoindex(ifname: cstring): cuint {.header: "<net/if.h>", importc: "if_nametoindex".}
 
-proc fromIpAddress*(address: IpAddress): NetworkInterface =
+proc getNetworkInterface*(address: IpAddress): NetworkInterface =
   var interfaces: ptr Ifaddrs
   if getifaddrs(addr interfaces) != 0:
     raise newException(NetworkInterfaceError, "getifaddrs failed")
diff --git a/tcp_syni.nim b/tcp_syni.nim
index 4dac239..c4f4fc4 100644
--- a/tcp_syni.nim
+++ b/tcp_syni.nim
@@ -96,7 +96,7 @@ proc injectTcpPacket(rawFd: AsyncFD, ipPacket: IpPacket) {.async.} =
 
 proc captureSeqNumbers(attempt: ConnectAttempt, cb: PunchProgressCb) {.async.} =
   # FIXME: timeout?
-  let iface = fromIpAddress(attempt.srcIp)
+  let iface = getNetworkInterface(attempt.srcIp)
   let captureFd = setupEthernetCapturingSocket(iface)
   var seqNums = newSeq[uint32]()
   while seqNums.len < attempt.dstPorts.len:
@@ -117,7 +117,7 @@ proc captureSeqNumbers(attempt: ConnectAttempt, cb: PunchProgressCb) {.async.} =
   await cb(seqNums)
 
 proc captureAndResendAck(attempt: ConnectAttempt) {.async.} =
-  let iface = fromIpAddress(attempt.srcIp)
+  let iface = getNetworkInterface(attempt.srcIp)
   let captureFd = setupEthernetCapturingSocket(iface)
   let injectFd = setupTcpInjectingSocket()
   block loops: