diff --git a/scada-common/network.lua b/scada-common/network.lua
index cd2cfdd..7483c8e 100644
--- a/scada-common/network.lua
+++ b/scada-common/network.lua
@@ -4,6 +4,7 @@
 
 local comms  = require("scada-common.comms")
 local log    = require("scada-common.log")
+local ppm    = require("scada-common.ppm")
 local util   = require("scada-common.util")
 
 local md5    = require("lockbox.digest.md5")
@@ -77,10 +78,11 @@ end
 
 -- NIC: Network Interface Controller<br>
 -- utilizes HMAC-MD5 for message authentication, if enabled and this is wireless
----@param iface string peripheral interface name
 ---@param modem Modem modem to use
-function network.nic(iface, modem)
+function network.nic(modem)
     local self = {
+        -- modem interface name
+        iface = ppm.get_iface(modem),
         -- used to quickly return out of tx/rx functions if there is nothing to do
         connected = true,
         -- used to avoid costly MAC calculations if not required
@@ -195,7 +197,7 @@ function network.nic(iface, modem)
     function public.receive(side, sender, reply_to, message, distance)
         local packet = nil
 
-        if self.connected and side == iface then
+        if self.connected and side == self.iface then
             local s_packet = comms.scada_packet()
 
             if self.use_hash then
diff --git a/supervisor/pcie.lua b/supervisor/pcie.lua
index fab96f0..dea089e 100644
--- a/supervisor/pcie.lua
+++ b/supervisor/pcie.lua
@@ -76,7 +76,7 @@ function pcie_bus.init(config, println)
             return false
         end
 
-        bus.wd_nic = network.nic(bus.wired_modem, wired_modem)
+        bus.wd_nic = network.nic(wired_modem)
         pcie_bus.nic.cards[bus.wired_modem] = bus.wd_nic
     end
 
@@ -89,7 +89,7 @@ function pcie_bus.init(config, println)
             return false
         end
 
-        bus.wl_nic = network.nic(wireless_iface, wireless_modem)
+        bus.wl_nic = network.nic(wireless_modem)
         pcie_bus.nic.cards[wireless_iface] = bus.wl_nic
     end
 
diff --git a/supervisor/session/svsessions.lua b/supervisor/session/svsessions.lua
index a8c7165..3fae56f 100644
--- a/supervisor/session/svsessions.lua
+++ b/supervisor/session/svsessions.lua
@@ -6,7 +6,6 @@ local log         = require("scada-common.log")
 local mqueue      = require("scada-common.mqueue")
 local types       = require("scada-common.types")
 local util        = require("scada-common.util")
-local pcie        = require("supervisor.pcie")
 
 local databus     = require("supervisor.databus")