diff --git a/doc/build-freebsd.md b/doc/build-freebsd.md
index ffb8ecfe197..8189fe0b1ee 100644
--- a/doc/build-freebsd.md
+++ b/doc/build-freebsd.md
@@ -74,7 +74,7 @@ There is an included test suite that is useful for testing code changes when dev
 To run the test suite (recommended), you will need to have Python 3 installed:
 
 ```bash
-pkg install python3 databases/py-sqlite3 net/py-pyzmq
+pkg install python3 databases/py-sqlite3 net/py-pyzmq lsof
 ```
 ---
 
diff --git a/doc/build-netbsd.md b/doc/build-netbsd.md
index d4d031d3144..22a697d731b 100644
--- a/doc/build-netbsd.md
+++ b/doc/build-netbsd.md
@@ -93,7 +93,14 @@ There is an included test suite that is useful for testing code changes when dev
 To run the test suite (recommended), you will need to have Python 3 installed:
 
 ```bash
-pkgin install python313 py313-zmq
+pkgin install python313 py313-zmq lsof
+```
+
+When the `lsof` binary package was built for a different point release, it might be necessary to force its installation as follows:
+
+```bash
+echo "CHECK_OSABI=no" >> /etc/pkg_install.conf
+pkgin install lsof
 ```
 
 ## Building Bitcoin Core
diff --git a/test/functional/feature_bind_extra.py b/test/functional/feature_bind_extra.py
index 91f846d6f69..2b81e9210e0 100755
--- a/test/functional/feature_bind_extra.py
+++ b/test/functional/feature_bind_extra.py
@@ -33,6 +33,7 @@ class BindExtraTest(BitcoinTestFramework):
 
     def skip_test_if_missing_module(self):
         self.skip_if_platform_not_posix()
+        self.skip_if_no_lsof_on_nonlinux()
 
     def setup_network(self):
         loopback_ipv4 = addr_to_hex("127.0.0.1")
diff --git a/test/functional/rpc_bind.py b/test/functional/rpc_bind.py
index 4494dde5dcf..81e916bb81f 100755
--- a/test/functional/rpc_bind.py
+++ b/test/functional/rpc_bind.py
@@ -17,6 +17,7 @@ class RPCBindTest(BitcoinTestFramework):
 
     def skip_test_if_missing_module(self):
         self.skip_if_platform_not_posix()
+        self.skip_if_no_lsof_on_nonlinux()
 
     def setup_network(self):
         self.add_nodes(self.num_nodes, None)
diff --git a/test/functional/test_framework/netutil.py b/test/functional/test_framework/netutil.py
index a13ee61e59f..fdf76f8b916 100644
--- a/test/functional/test_framework/netutil.py
+++ b/test/functional/test_framework/netutil.py
@@ -2,7 +2,7 @@
 # Copyright (c) 2014-present The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
-"""Linux, macOS, and BSD network utilities.
+"""Linux, macOS, BSD and illumos network utilities.
 
 Roughly based on https://web.archive.org/web/20190424172231/http://voorloopnul.com/blog/a-python-netstat-in-less-than-100-lines-of-code/ by Ricardo Pascal
 """
@@ -105,11 +105,13 @@ def get_bind_addrs(pid):
             if conn[3] == STATE_LISTEN and conn[4] in inodes:
                 bind_addrs.append(conn[1])
         return bind_addrs
-    elif sys.platform.startswith(("darwin", "freebsd", "netbsd", "openbsd")):
+    # OpenBSD is not included, as it does not ship the lsof utility.
+    elif sys.platform.startswith(("darwin", "freebsd", "netbsd", "sunos5")):
         import re
         import subprocess
         output = subprocess.check_output(["lsof",
-            *(["-Di"] if sys.platform.startswith("freebsd") else []), # Ignore device cache to avoid stderr warnings.
+            *(["-Di"] if sys.platform.startswith(("freebsd", "netbsd", "sunos5")) else []), # Ignore device cache to avoid stderr warnings.
+            *(["-w"] if sys.platform.startswith("netbsd") else []), # Ignore point release mismatch warnings.
             "-nP",          # Keep hosts and ports numeric.
             "-a",           # Require all filters to match.
             "-p", str(pid), # Limit results to the target pid.
@@ -151,14 +153,14 @@ def all_interfaces():
         return [(namestr[i:i+16].split(b'\0', 1)[0],
                  socket.inet_ntoa(namestr[i+20:i+24]))
                 for i in range(0, outbytes, struct_size)]
-    elif sys.platform.startswith(("darwin", "freebsd", "netbsd", "openbsd")):
+    elif sys.platform.startswith(("darwin", "freebsd", "netbsd", "openbsd", "sunos5")):
         import re
         import subprocess
         output = subprocess.check_output(["ifconfig", "-au"], text=True)
         return [
             (m["iface"].encode(), ip)
             for m in re.finditer(r"(?m)^(?P<iface>\S+):(?P<block>[^\n]*(?:\n[ \t]+[^\n]*)*)", output)
-            for ip in re.findall(r"inet (\S+)", m["block"])
+            for ip in re.findall(r"inet ([^\s/]+)", m["block"])
         ]
     else:
         raise NotImplementedError(f"all_interfaces is not supported on {sys.platform}")
diff --git a/test/functional/test_framework/test_framework.py b/test/functional/test_framework/test_framework.py
index 8559a2ae611..f1a8fdefd01 100755
--- a/test/functional/test_framework/test_framework.py
+++ b/test/functional/test_framework/test_framework.py
@@ -1027,6 +1027,11 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
         if platform.system() != "Linux":
             raise SkipTest("not on a Linux system")
 
+    def skip_if_no_lsof_on_nonlinux(self):
+        """Skip the running test if the lsof utility is not available on non-Linux platforms."""
+        if sys.platform != "linux" and shutil.which("lsof") is None:
+            raise SkipTest("lsof not available")
+
     def skip_if_platform_not_posix(self):
         """Skip the running test if we are not on a POSIX platform"""
         if os.name != 'posix':