Reduced MTU to hopefully improve upload speeds

src/vpn_manager_globalprotect/vpnc.py

@@ -11,6 +11,7 @@ import ipaddress
 from typing import TypeVar, Generic
 from io import TextIOBase
 from pathlib import Path
+import math
 
 
 class Reason(enum.StrEnum):
@@ -64,6 +65,16 @@ class Config:
         self._route_id += 1
         return val
 
+    @property
+    def num_digits_inclusions(self) -> int:
+        """Number of digits to use for inclusion route IDs."""
+        return max(2, int(math.log10(len(self.split_tunnel_inclusions))) + 1)
+
+    @property
+    def num_digits_exclusions(self) -> int:
+        """Number of digits to use for exclusion route IDs."""
+        return max(2, int(math.log10(len(self.split_tunnel_exclusions))) + 1)
+
     def __init__(self):
 
         self.vpnd_connection_name = os.environ.get("VPND_CONNECTION_NAME")
@@ -178,11 +189,13 @@ class Config:
                 "[Match]\n",
                 f"Name={self.tun_device}\n",
                 "Kind=tun\n",
-                "[Network]\n",
+                "\n[Link]\n",
+                "MTUBytes=1422\n",
+                "\n[Network]\n",
                 f"Address={self.internal_ipv4_address}\n",
                 f"DNS={' '.join(str(dns) for dns in self.internal_ipv4_dns)}\n",
                 f"Domains={self.default_domain} {' '.join(str(domain) for domain in self.search_domains)}\n",
-                "[Route]\n",
+                "\n[Route]\n",
                 "Gateway=0.0.0.0\n",
                 "Metric=64\n",
                 f"Table={self.split_enforcement_table if self.vpnd_enforce_split_tunnel else 'main'}\n",
@@ -210,6 +223,7 @@ class Config:
             dir.mkdir()
         for net in self.split_tunnel_inclusions:
             self.write_route(dir, net)
+        self._route_id = 0
         if self.vpnd_enforce_split_tunnel:
             # configure exclusions after inclusions. inclusions don't make sense without this, since they'd just be captured by the default.
             for net in self.split_tunnel_exclusions: