diff --git a/boards/arm/cxd56xx/spresense/configs/rndis/defconfig b/boards/arm/cxd56xx/spresense/configs/rndis/defconfig
index 8c8477d09ad..99a62a125e9 100644
--- a/boards/arm/cxd56xx/spresense/configs/rndis/defconfig
+++ b/boards/arm/cxd56xx/spresense/configs/rndis/defconfig
@@ -88,7 +88,6 @@ CONFIG_NETUTILS_FTPD=y
 CONFIG_NETUTILS_HTTPD_DIRLIST=y
 CONFIG_NETUTILS_HTTPD_SENDFILE=y
 CONFIG_NETUTILS_IPERF=y
-CONFIG_NETUTILS_IPERFTEST_DEVNAME="eth0"
 CONFIG_NETUTILS_TELNETD=y
 CONFIG_NETUTILS_WEBCLIENT=y
 CONFIG_NETUTILS_WEBSERVER=y
diff --git a/boards/arm/cxd56xx/spresense/configs/rndis_smp/defconfig b/boards/arm/cxd56xx/spresense/configs/rndis_smp/defconfig
index bd96607839f..c3174106325 100644
--- a/boards/arm/cxd56xx/spresense/configs/rndis_smp/defconfig
+++ b/boards/arm/cxd56xx/spresense/configs/rndis_smp/defconfig
@@ -90,7 +90,6 @@ CONFIG_NETUTILS_FTPD=y
 CONFIG_NETUTILS_HTTPD_DIRLIST=y
 CONFIG_NETUTILS_HTTPD_SENDFILE=y
 CONFIG_NETUTILS_IPERF=y
-CONFIG_NETUTILS_IPERFTEST_DEVNAME="eth0"
 CONFIG_NETUTILS_TELNETD=y
 CONFIG_NETUTILS_WEBCLIENT=y
 CONFIG_NETUTILS_WEBSERVER=y
diff --git a/boards/arm/imx6/sabre-6quad/configs/netknsh/defconfig b/boards/arm/imx6/sabre-6quad/configs/netknsh/defconfig
index 2ba467f6f81..379783e3da2 100644
--- a/boards/arm/imx6/sabre-6quad/configs/netknsh/defconfig
+++ b/boards/arm/imx6/sabre-6quad/configs/netknsh/defconfig
@@ -79,7 +79,6 @@ CONFIG_NETINIT_IPADDR=0x0a00020f
 CONFIG_NETINIT_NOMAC=y
 CONFIG_NETUTILS_CODECS=y
 CONFIG_NETUTILS_IPERF=y
-CONFIG_NETUTILS_IPERFTEST_DEVNAME="eth0"
 CONFIG_NETUTILS_TELNETD=y
 CONFIG_NETUTILS_TFTPC=y
 CONFIG_NETUTILS_WEBCLIENT=y
diff --git a/boards/arm/imx6/sabre-6quad/configs/netknsh_smp/defconfig b/boards/arm/imx6/sabre-6quad/configs/netknsh_smp/defconfig
index 58bce0a3116..a11c47f838f 100644
--- a/boards/arm/imx6/sabre-6quad/configs/netknsh_smp/defconfig
+++ b/boards/arm/imx6/sabre-6quad/configs/netknsh_smp/defconfig
@@ -79,7 +79,6 @@ CONFIG_NETINIT_IPADDR=0x0a00020f
 CONFIG_NETINIT_NOMAC=y
 CONFIG_NETUTILS_CODECS=y
 CONFIG_NETUTILS_IPERF=y
-CONFIG_NETUTILS_IPERFTEST_DEVNAME="eth0"
 CONFIG_NETUTILS_TELNETD=y
 CONFIG_NETUTILS_TFTPC=y
 CONFIG_NETUTILS_WEBCLIENT=y
diff --git a/boards/arm/imx6/sabre-6quad/configs/netnsh/defconfig b/boards/arm/imx6/sabre-6quad/configs/netnsh/defconfig
index 06e57da484d..949f74df2b8 100644
--- a/boards/arm/imx6/sabre-6quad/configs/netnsh/defconfig
+++ b/boards/arm/imx6/sabre-6quad/configs/netnsh/defconfig
@@ -72,7 +72,6 @@ CONFIG_NETINIT_IPADDR=0x0a00020f
 CONFIG_NETINIT_NOMAC=y
 CONFIG_NETUTILS_CODECS=y
 CONFIG_NETUTILS_IPERF=y
-CONFIG_NETUTILS_IPERFTEST_DEVNAME="eth0"
 CONFIG_NETUTILS_TELNETD=y
 CONFIG_NETUTILS_TFTPC=y
 CONFIG_NETUTILS_WEBCLIENT=y
diff --git a/boards/arm/imx6/sabre-6quad/configs/netnsh_smp/defconfig b/boards/arm/imx6/sabre-6quad/configs/netnsh_smp/defconfig
index fe40748c7eb..7cc8af2e096 100644
--- a/boards/arm/imx6/sabre-6quad/configs/netnsh_smp/defconfig
+++ b/boards/arm/imx6/sabre-6quad/configs/netnsh_smp/defconfig
@@ -55,7 +55,6 @@ CONFIG_NETINIT_IPADDR=0x0a00020f
 CONFIG_NETINIT_NOMAC=y
 CONFIG_NETUTILS_CODECS=y
 CONFIG_NETUTILS_IPERF=y
-CONFIG_NETUTILS_IPERFTEST_DEVNAME="eth0"
 CONFIG_NETUTILS_TELNETD=y
 CONFIG_NETUTILS_TFTPC=y
 CONFIG_NETUTILS_WEBCLIENT=y
diff --git a/boards/arm/imxrt/imxrt1060-evk/configs/netnsh/defconfig b/boards/arm/imxrt/imxrt1060-evk/configs/netnsh/defconfig
index 081cd3078cd..ccbdd1dcad9 100644
--- a/boards/arm/imxrt/imxrt1060-evk/configs/netnsh/defconfig
+++ b/boards/arm/imxrt/imxrt1060-evk/configs/netnsh/defconfig
@@ -34,7 +34,6 @@ CONFIG_NETDB_DNSCLIENT=y
 CONFIG_NETDEV_STATISTICS=y
 CONFIG_NETINIT_NOMAC=y
 CONFIG_NETUTILS_IPERF=y
-CONFIG_NETUTILS_IPERFTEST_DEVNAME="eth0"
 CONFIG_NETUTILS_TELNETD=y
 CONFIG_NET_ARP_SEND=y
 CONFIG_NET_BROADCAST=y
diff --git a/boards/arm/imxrt/imxrt1064-evk/configs/netnsh/defconfig b/boards/arm/imxrt/imxrt1064-evk/configs/netnsh/defconfig
index 411846bdcf9..7b9b4dfb001 100644
--- a/boards/arm/imxrt/imxrt1064-evk/configs/netnsh/defconfig
+++ b/boards/arm/imxrt/imxrt1064-evk/configs/netnsh/defconfig
@@ -34,7 +34,6 @@ CONFIG_NETDB_DNSCLIENT=y
 CONFIG_NETDEV_STATISTICS=y
 CONFIG_NETINIT_NOMAC=y
 CONFIG_NETUTILS_IPERF=y
-CONFIG_NETUTILS_IPERFTEST_DEVNAME="eth0"
 CONFIG_NETUTILS_TELNETD=y
 CONFIG_NET_ARP_SEND=y
 CONFIG_NET_BROADCAST=y
diff --git a/boards/arm/lc823450/lc823450-xgevk/configs/rndis/defconfig b/boards/arm/lc823450/lc823450-xgevk/configs/rndis/defconfig
index 055bf7d2bb0..fad049b3e6c 100644
--- a/boards/arm/lc823450/lc823450-xgevk/configs/rndis/defconfig
+++ b/boards/arm/lc823450/lc823450-xgevk/configs/rndis/defconfig
@@ -90,7 +90,6 @@ CONFIG_NETINIT_THREAD=y
 CONFIG_NETUTILS_CODECS=y
 CONFIG_NETUTILS_DHCPC=y
 CONFIG_NETUTILS_IPERF=y
-CONFIG_NETUTILS_IPERFTEST_DEVNAME="eth0"
 CONFIG_NETUTILS_TELNETD=y
 CONFIG_NETUTILS_WEBCLIENT=y
 CONFIG_NET_ARP_SEND=y
diff --git a/boards/arm/stm32/stm32f4discovery/configs/rndis/defconfig b/boards/arm/stm32/stm32f4discovery/configs/rndis/defconfig
index d959afcfd8b..04a657bfa8d 100644
--- a/boards/arm/stm32/stm32f4discovery/configs/rndis/defconfig
+++ b/boards/arm/stm32/stm32f4discovery/configs/rndis/defconfig
@@ -48,7 +48,6 @@ CONFIG_NETINIT_NOMAC=y
 CONFIG_NETINIT_THREAD=y
 CONFIG_NETUTILS_DHCPC=y
 CONFIG_NETUTILS_IPERF=y
-CONFIG_NETUTILS_IPERFTEST_DEVNAME="eth0"
 CONFIG_NETUTILS_TELNETD=y
 CONFIG_NETUTILS_WEBCLIENT=y
 CONFIG_NET_ARP_SEND=y
diff --git a/boards/arm/stm32h7/nucleo-h743zi2/configs/jumbo/defconfig b/boards/arm/stm32h7/nucleo-h743zi2/configs/jumbo/defconfig
index 1d8ea9a3145..ee6835a64d0 100644
--- a/boards/arm/stm32h7/nucleo-h743zi2/configs/jumbo/defconfig
+++ b/boards/arm/stm32h7/nucleo-h743zi2/configs/jumbo/defconfig
@@ -52,7 +52,6 @@ CONFIG_NET=y
 CONFIG_NETDB_DNSCLIENT=y
 CONFIG_NETUTILS_DISCOVER=y
 CONFIG_NETUTILS_IPERF=y
-CONFIG_NETUTILS_IPERFTEST_DEVNAME="eth0"
 CONFIG_NETUTILS_NETCAT=y
 CONFIG_NETUTILS_TELNETD=y
 CONFIG_NETUTILS_WEBCLIENT=y
diff --git a/boards/arm/tiva/lm3s6965-ek/configs/discover/defconfig b/boards/arm/tiva/lm3s6965-ek/configs/discover/defconfig
index ba5f5c5749c..1caf4203b67 100644
--- a/boards/arm/tiva/lm3s6965-ek/configs/discover/defconfig
+++ b/boards/arm/tiva/lm3s6965-ek/configs/discover/defconfig
@@ -30,7 +30,6 @@ CONFIG_NETDB_DNSCLIENT_ENTRIES=4
 CONFIG_NETDB_DNSSERVER_NOADDR=y
 CONFIG_NETINIT_NOMAC=y
 CONFIG_NETUTILS_IPERF=y
-CONFIG_NETUTILS_IPERFTEST_DEVNAME="eth0"
 CONFIG_NETUTILS_TELNETD=y
 CONFIG_NETUTILS_TFTPC=y
 CONFIG_NETUTILS_WEBCLIENT=y
diff --git a/boards/risc-v/litex/arty_a7/configs/netnsh/defconfig b/boards/risc-v/litex/arty_a7/configs/netnsh/defconfig
index 996298bc2b5..52c65385c39 100644
--- a/boards/risc-v/litex/arty_a7/configs/netnsh/defconfig
+++ b/boards/risc-v/litex/arty_a7/configs/netnsh/defconfig
@@ -63,7 +63,6 @@ CONFIG_NETDEV_STATISTICS=y
 CONFIG_NETINIT_NOMAC=y
 CONFIG_NETINIT_THREAD=y
 CONFIG_NETUTILS_IPERF=y
-CONFIG_NETUTILS_IPERFTEST_DEVNAME="eth0"
 CONFIG_NETUTILS_NETLIB_GENERICURLPARSER=y
 CONFIG_NETUTILS_TELNETC=y
 CONFIG_NETUTILS_TELNETD=y