diff --git a/boards/arm/qemu/qemu-armv7a/configs/rpproxy_ivshmem/defconfig b/boards/arm/qemu/qemu-armv7a/configs/rpproxy_ivshmem/defconfig
index bd95e5adaf5..863c05901d3 100644
--- a/boards/arm/qemu/qemu-armv7a/configs/rpproxy_ivshmem/defconfig
+++ b/boards/arm/qemu/qemu-armv7a/configs/rpproxy_ivshmem/defconfig
@@ -89,7 +89,7 @@ CONFIG_RPMSGMTD=y
 CONFIG_RPMSG_PING=y
 CONFIG_RPTUN=y
 CONFIG_RPTUN_IVSHMEM=y
-CONFIG_RPTUN_IVSHMEM_NAME="0:server:m"
+CONFIG_RPTUN_IVSHMEM_NAME="0:server:s"
 CONFIG_SCHED_BACKTRACE=y
 CONFIG_SCHED_HAVE_PARENT=y
 CONFIG_SCHED_HPWORK=y
diff --git a/boards/arm/qemu/qemu-armv7a/configs/rpserver_ivshmem/defconfig b/boards/arm/qemu/qemu-armv7a/configs/rpserver_ivshmem/defconfig
index 28fa311c978..7e3a55a4fb3 100644
--- a/boards/arm/qemu/qemu-armv7a/configs/rpserver_ivshmem/defconfig
+++ b/boards/arm/qemu/qemu-armv7a/configs/rpserver_ivshmem/defconfig
@@ -89,7 +89,7 @@ CONFIG_READLINE_TABCOMPLETION=y
 CONFIG_RPMSG_PING=y
 CONFIG_RPTUN=y
 CONFIG_RPTUN_IVSHMEM=y
-CONFIG_RPTUN_IVSHMEM_NAME="0:proxy:s"
+CONFIG_RPTUN_IVSHMEM_NAME="0:proxy:m"
 CONFIG_SCHED_BACKTRACE=y
 CONFIG_SCHED_HAVE_PARENT=y
 CONFIG_SCHED_HPWORK=y
diff --git a/boards/arm64/qemu/qemu-armv8a/configs/rpproxy_ivshmem/defconfig b/boards/arm64/qemu/qemu-armv8a/configs/rpproxy_ivshmem/defconfig
index b245012baff..17c0fe38379 100644
--- a/boards/arm64/qemu/qemu-armv8a/configs/rpproxy_ivshmem/defconfig
+++ b/boards/arm64/qemu/qemu-armv8a/configs/rpproxy_ivshmem/defconfig
@@ -73,7 +73,8 @@ CONFIG_READLINE_TABCOMPLETION=y
 CONFIG_RPMSG_PING=y
 CONFIG_RPTUN=y
 CONFIG_RPTUN_IVSHMEM=y
-CONFIG_RPTUN_IVSHMEM_NAME="0:server:m"
+CONFIG_RPTUN_IVSHMEM_NAME="0:server:s"
+CONFIG_RPTUN_STACKSIZE=8192
 CONFIG_SCHED_BACKTRACE=y
 CONFIG_SCHED_HAVE_PARENT=y
 CONFIG_SCHED_HPWORK=y
diff --git a/boards/arm64/qemu/qemu-armv8a/configs/rpserver_ivshmem/defconfig b/boards/arm64/qemu/qemu-armv8a/configs/rpserver_ivshmem/defconfig
index d8f02ca1f31..f201c63fb00 100644
--- a/boards/arm64/qemu/qemu-armv8a/configs/rpserver_ivshmem/defconfig
+++ b/boards/arm64/qemu/qemu-armv8a/configs/rpserver_ivshmem/defconfig
@@ -74,7 +74,8 @@ CONFIG_READLINE_TABCOMPLETION=y
 CONFIG_RPMSG_PING=y
 CONFIG_RPTUN=y
 CONFIG_RPTUN_IVSHMEM=y
-CONFIG_RPTUN_IVSHMEM_NAME="0:proxy:s"
+CONFIG_RPTUN_IVSHMEM_NAME="0:proxy:m"
+CONFIG_RPTUN_STACKSIZE=8192
 CONFIG_SCHED_BACKTRACE=y
 CONFIG_SCHED_HAVE_PARENT=y
 CONFIG_SCHED_HPWORK=y