diff --git a/openhpi-snmp-disable-des.patch b/openhpi-snmp-disable-des.patch
new file mode 100644
index 0000000..8280e86
--- /dev/null
+++ b/openhpi-snmp-disable-des.patch
@@ -0,0 +1,35 @@
+This patch is required because net-smp is not build with DES support,
+so usmDESPrivProtocol is not available.
+
+diff --git a/plugins/snmp_bc/snmp_bc_session.c b/plugins/snmp_bc/snmp_bc_session.c
+index 767cdb1a77ee420e..cb724fcee0668bd5 100644
+--- a/plugins/snmp_bc/snmp_bc_session.c
++++ b/plugins/snmp_bc/snmp_bc_session.c
+@@ -239,23 +239,10 @@ void *snmp_bc_open(GHashTable *handler_config,
+ 						err("Cannot find \"privacy_passwd\" configuration parameter.");
+ 						return NULL;
+ 					}
+-				
+-					custom_handle->session.securityLevel = SNMP_SEC_LEVEL_AUTHPRIV;
+-					custom_handle->session.securityPrivProto = usmDESPrivProtocol;
+-					custom_handle->session.securityPrivProtoLen = USM_PRIV_PROTO_DES_LEN;
+-					custom_handle->session.securityPrivKeyLen = USM_PRIV_KU_LEN;
+-					if (generate_Ku(custom_handle->session.securityAuthProto,
+-							custom_handle->session.securityAuthProtoLen,
+-							(u_char *) privacy_passwd, strlen(privacy_passwd),
+-							custom_handle->session.securityPrivKey,
+-							&(custom_handle->session.securityPrivKeyLen)) != SNMPERR_SUCCESS) {
+-						snmp_perror("snmp_bc");
+-						snmp_log(LOG_ERR,
+-							 "Error generating Ku from private passphrase.\n");
+-						err("Unable to establish SNMP authpriv session.");
+-						return NULL;
+-					}
+-					
++					snmp_perror("snmp_bc");
++					snmp_log(LOG_ERR, "DES authentication is not supported.\n");
++					err("Unable to establish SNMP authpriv session.");
++					return NULL;
+ 				}
+ 				
+ 
diff --git a/openhpi.spec b/openhpi.spec
index efd4416..2a4e80c 100644
--- a/openhpi.spec
+++ b/openhpi.spec
@@ -1,7 +1,7 @@
 Summary:        Hardware Platform Interface library and tools
 Name:           openhpi
 Version:        3.8.0
-Release:        17%{?dist}
+Release:        18%{?dist}
 License:        BSD
 URL:            http://www.openhpi.org
 Source0:        http://downloads.sourceforge.net/%{name}/%{name}-%{version}.tar.gz
@@ -12,6 +12,7 @@ Patch2:         %{name}-3.7.0-multilib.patch
 Patch3:         %{name}-3.8.0-manpage-scan.patch
 Patch4:         %{name}-3.8.0-ipv6-ipmidirect.patch
 Patch5:         %{name}-3.8.0-link-libopenhpi.patch
+Patch6: openhpi-snmp-disable-des.patch
 BuildRequires: make
 BuildRequires:  gcc-c++
 %if 0%{?fedora} || 0%{?rhel} < 9
@@ -152,6 +153,9 @@ make check
 
 
 %changelog
+* Wed Jun 16 2021 Florian Weimer <fweimer@redhat.com> - 3.8.0-18
+- Port to net-snmp without DES support (#1958073)
+
 * Wed Jun 16 2021 Mohan Boddu <mboddu@redhat.com> - 3.8.0-17
 - Rebuilt for RHEL 9 BETA for openssl 3.0
   Related: rhbz#1971065